905640332 has 12 divisors (see below), whose sum is σ = 1594362000. Its totient is φ = 450108336.

The previous prime is 905640319. The next prime is 905640361. The reversal of 905640332 is 233046509.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677207 + ... + 678542.

It is an arithmetic number, because the mean of its divisors is an integer number (132863500).

Almost surely, 2^905640332 is an apocalyptic number.

It is an amenable number.

905640332 is a deficient number, since it is larger than the sum of its proper divisors (688721668).

905640332 is a wasteful number, since it uses less digits than its factorization.

905640332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355920 (or 1355918 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 905640332 is about 30093.8587090456. The cubic root of 905640332 is about 967.5021046143.

The spelling of 905640332 in words is "nine hundred five million, six hundred forty thousand, three hundred thirty-two".