77912604 has 168 divisors, whose sum is σ = 255604608. Its totient is φ = 20178720.

The previous prime is 77912573. The next prime is 77912629. The reversal of 77912604 is 40621977.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 224359 + ... + 224705.

It is an arithmetic number, because the mean of its divisors is an integer number (1521456).

Almost surely, 2^77912604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77912604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127802304).

77912604 is an abundant number, since it is smaller than the sum of its proper divisors (177692004).

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

77912604 is a wasteful number, since it uses less digits than its factorization.

77912604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 77912604 is about 8826.8116554054. The cubic root of 77912604 is about 427.1062302082.

The spelling of 77912604 in words is "seventy-seven million, nine hundred twelve thousand, six hundred four".