Search a number
-
+
61630 = 256163
BaseRepresentation
bin1111000010111110
310010112121
433002332
53433010
61153154
7344452
oct170276
9103477
1061630
1142338
122b7ba
132208a
1418662
15133da
hexf0be

61630 has 8 divisors (see below), whose sum is σ = 110952. Its totient is φ = 24648.

The previous prime is 61627. The next prime is 61631. The reversal of 61630 is 3616.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3072 + ... + 3091.

It is an arithmetic number, because the mean of its divisors is an integer number (13869).

261630 is an apocalyptic number.

61630 is a deficient number, since it is larger than the sum of its proper divisors (49322).

61630 is a wasteful number, since it uses less digits than its factorization.

61630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6170.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 61630 is about 248.2539022855. The cubic root of 61630 is about 39.5000267051.

It can be divided in two parts, 616 and 30, that added together give a palindrome (646).

The spelling of 61630 in words is "sixty-one thousand, six hundred thirty".

Divisors: 1 2 5 10 6163 12326 30815 61630