634245 has 8 divisors (see below), whose sum is σ = 1014816. Its totient is φ = 338256.

The previous prime is 634241. The next prime is 634247. The reversal of 634245 is 542436.

634245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 634245 - 2² = 634241 is a prime.

634245 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21127 + ... + 21156.

It is an arithmetic number, because the mean of its divisors is an integer number (126852).

2⁶³⁴²⁴⁵ is an apocalyptic number.

It is an amenable number.

634245 is a deficient number, since it is larger than the sum of its proper divisors (380571).

634245 is a wasteful number, since it uses less digits than its factorization.

634245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42291.

The product of its digits is 2880, while the sum is 24.

The square root of 634245 is about 796.3950024956. The cubic root of 634245 is about 85.9183017170.

Subtracting from 634245 its reverse (542436), we obtain a square (91809 = 303²).

It can be divided in two parts, 6342 and 45, that multiplied together give a triangular number (285390 = T₇₅₅).

The spelling of 634245 in words is "six hundred thirty-four thousand, two hundred forty-five".