7640040804 has 48 divisors (see below), whose sum is σ = 19452545280. Its totient is φ = 2314548640.

The previous prime is 7640040791. The next prime is 7640040817. The reversal of 7640040804 is 4080400467.

It is an interprime number because it is at equal distance from previous prime (7640040791) and next prime (7640040817).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861907 + ... + 870725.

It is an arithmetic number, because the mean of its divisors is an integer number (405261360).

Almost surely, 2^7640040804 is an apocalyptic number.

It is an amenable number.

7640040804 is an abundant number, since it is smaller than the sum of its proper divisors (11812504476).

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

7640040804 is a wasteful number, since it uses less digits than its factorization.

7640040804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15400 (or 15398 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 7640040804 is about 87407.3269468870. The cubic root of 7640040804 is about 1969.5419072800.

The spelling of 7640040804 in words is "seven billion, six hundred forty million, forty thousand, eight hundred four".