655035631 has 4 divisors (see below), whose sum is σ = 658429792. Its totient is φ = 651641472.

The previous prime is 655035599. The next prime is 655035637. The reversal of 655035631 is 136530556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 655035631 - 2⁵ = 655035599 is a prime.

It is a super-2 number, since 2×655035631² = 858143355759136322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655035637) 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, 1696791 + ... + 1697176.

It is an arithmetic number, because the mean of its divisors is an integer number (164607448).

Almost surely, 2^655035631 is an apocalyptic number.

655035631 is a deficient number, since it is larger than the sum of its proper divisors (3394161).

655035631 is a wasteful number, since it uses less digits than its factorization.

655035631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394160.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 655035631 is about 25593.6638838600. The cubic root of 655035631 is about 868.4703075202.

The spelling of 655035631 in words is "six hundred fifty-five million, thirty-five thousand, six hundred thirty-one".