904668660 has 576 divisors, whose sum is σ = 3622993920. Its totient is φ = 177914880.

The previous prime is 904668623. The next prime is 904668671. The reversal of 904668660 is 66866409.

904668660 = 2290² + 2291² + ... + 2450².

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17069194 + ... + 17069246.

It is an arithmetic number, because the mean of its divisors is an integer number (6289920).

Almost surely, 2^904668660 is an apocalyptic number.

904668660 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 904668660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811496960).

904668660 is an abundant number, since it is smaller than the sum of its proper divisors (2718325260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

904668660 is a wasteful number, since it uses less digits than its factorization.

904668660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 904668660 is about 30077.7103516873. The cubic root of 904668660 is about 967.1559660553.

The spelling of 904668660 in words is "nine hundred four million, six hundred sixty-eight thousand, six hundred sixty".