Search a number
-
+
630125 = 53712
BaseRepresentation
bin10011001110101101101
31012000100222
42121311231
5130131000
621301125
75233046
oct2316555
91160328
10630125
113a0471
122647a5
13190a72
141258cd
15c6a85
hex99d6d

630125 has 12 divisors (see below), whose sum is σ = 797628. Its totient is φ = 497000.

The previous prime is 630107. The next prime is 630127. The reversal of 630125 is 521036.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 20164 + 609961 = 142^2 + 781^2 .

It is not a de Polignac number, because 630125 - 214 = 613741 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8840 + ... + 8910.

It is an arithmetic number, because the mean of its divisors is an integer number (66469).

2630125 is an apocalyptic number.

It is an amenable number.

630125 is a deficient number, since it is larger than the sum of its proper divisors (167503).

630125 is an frugal number, since it uses more digits than its factorization.

630125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 630125 is about 793.8041320124. The cubic root of 630125 is about 85.7318581697.

Multiplying 630125 by its product of nonzero digits (180), we get a square (113422500 = 106502).

The spelling of 630125 in words is "six hundred thirty thousand, one hundred twenty-five".

Divisors: 1 5 25 71 125 355 1775 5041 8875 25205 126025 630125