77380655 has 16 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 56105760.

The previous prime is 77380643. The next prime is 77380661. The reversal of 77380655 is 55608377.

It is not a de Polignac number, because 77380655 - 2⁶ = 77380591 is a prime.

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, 17786 + ... + 21704.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^77380655 is an apocalyptic number.

77380655 is a deficient number, since it is larger than the sum of its proper divisors (24225745).

77380655 is a wasteful number, since it uses less digits than its factorization.

77380655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 77380655 is about 8796.6274787557. The cubic root of 77380655 is about 426.1319857440.

The spelling of 77380655 in words is "seventy-seven million, three hundred eighty thousand, six hundred fifty-five".