961604004 has 24 divisors (see below), whose sum is σ = 2316122368. Its totient is φ = 310194720.

The previous prime is 961603999. The next prime is 961604009. The reversal of 961604004 is 400406169.

It is an interprime number because it is at equal distance from previous prime (961603999) and next prime (961604009).

It is not an unprimeable number, because it can be changed into a prime (961604009) 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, 1292107 + ... + 1292850.

Almost surely, 2^961604004 is an apocalyptic number.

It is an amenable number.

961604004 is an abundant number, since it is smaller than the sum of its proper divisors (1354518364).

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

961604004 is a wasteful number, since it uses less digits than its factorization.

961604004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584995 (or 2584993 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 961604004 is about 31009.7404697298. The cubic root of 961604004 is about 987.0339426351.

The spelling of 961604004 in words is "nine hundred sixty-one million, six hundred four thousand, four".