77380774 has 16 divisors (see below), whose sum is σ = 120130560. Its totient is φ = 37343880.

The previous prime is 77380739. The next prime is 77380813. The reversal of 77380774 is 47708377.

It is a self number, because there is not a number n which added to its sum of digits gives 77380774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25797 + ... + 28639.

It is an arithmetic number, because the mean of its divisors is an integer number (7508160).

Almost surely, 2^77380774 is an apocalyptic number.

77380774 is a deficient number, since it is larger than the sum of its proper divisors (42749786).

77380774 is a wasteful number, since it uses less digits than its factorization.

77380774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315.

The product of its (nonzero) digits is 230496, while the sum is 43.

The square root of 77380774 is about 8796.6342427090. The cubic root of 77380774 is about 426.1322041865.

The spelling of 77380774 in words is "seventy-seven million, three hundred eighty thousand, seven hundred seventy-four".