77364990 has 64 divisors (see below), whose sum is σ = 208422720. Its totient is φ = 20419200.

The previous prime is 77364983. The next prime is 77365003. The reversal of 77364990 is 9946377.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25852 + ... + 28688.

It is an arithmetic number, because the mean of its divisors is an integer number (3256605).

Almost surely, 2^77364990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77364990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104211360).

77364990 is an abundant number, since it is smaller than the sum of its proper divisors (131057730).

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

77364990 is a wasteful number, since it uses less digits than its factorization.

77364990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954 (or 2948 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 77364990 is about 8795.7370356327. The cubic root of 77364990 is about 426.1032283065.

The spelling of 77364990 in words is "seventy-seven million, three hundred sixty-four thousand, nine hundred ninety".