904320690 has 192 divisors, whose sum is σ = 2727115776. Its totient is φ = 187888896.

The previous prime is 904320689. The next prime is 904320691. The reversal of 904320690 is 96023409.

It is an interprime number because it is at equal distance from previous prime (904320689) and next prime (904320691).

It is a super-2 number, since 2×904320690² = 1635591820724152200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904320691) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2945517 + ... + 2945823.

It is an arithmetic number, because the mean of its divisors is an integer number (14203728).

Almost surely, 2^904320690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 904320690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363557888).

904320690 is an abundant number, since it is smaller than the sum of its proper divisors (1822795086).

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

904320690 is a wasteful number, since it uses less digits than its factorization.

904320690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 904320690 is about 30071.9252792368. The cubic root of 904320690 is about 967.0319484879.

The spelling of 904320690 in words is "nine hundred four million, three hundred twenty thousand, six hundred ninety".