77004312 has 64 divisors (see below), whose sum is σ = 240019200. Its totient is φ = 20000640.

The previous prime is 77004293. The next prime is 77004331. The reversal of 77004312 is 21340077.

It is an interprime number because it is at equal distance from previous prime (77004293) and next prime (77004331).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 18987 + ... + 22682.

It is an arithmetic number, because the mean of its divisors is an integer number (3750300).

Almost surely, 2^77004312 is an apocalyptic number.

It is an amenable number.

77004312 is an abundant number, since it is smaller than the sum of its proper divisors (163014888).

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

77004312 is a wasteful number, since it uses less digits than its factorization.

77004312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41696 (or 41692 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 77004312 is about 8775.2100829553. The cubic root of 77004312 is about 425.4400277622.

Adding to 77004312 its reverse (21340077), we get a palindrome (98344389).

The spelling of 77004312 in words is "seventy-seven million, four thousand, three hundred twelve".