77867604 has 72 divisors (see below), whose sum is σ = 207043200. Its totient is φ = 24628032.

The previous prime is 77867597. The next prime is 77867609. The reversal of 77867604 is 40676877.

It is a self number, because there is not a number n which added to its sum of digits gives 77867604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77867609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129697 + ... + 130295.

It is an arithmetic number, because the mean of its divisors is an integer number (2875600).

Almost surely, 2^77867604 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 77867604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103521600).

77867604 is an abundant number, since it is smaller than the sum of its proper divisors (129175596).

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

77867604 is a wasteful number, since it uses less digits than its factorization.

77867604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 77867604 is about 8824.2622354506. The cubic root of 77867604 is about 427.0239864256.

The spelling of 77867604 in words is "seventy-seven million, eight hundred sixty-seven thousand, six hundred four".