77345655 has 16 divisors (see below), whose sum is σ = 123880320. Its totient is φ = 41208608.

The previous prime is 77345629. The next prime is 77345657. The reversal of 77345655 is 55654377.

It is a cyclic number.

It is not a de Polignac number, because 77345655 - 2⁵ = 77345623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77345657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17236 + ... + 21254.

It is an arithmetic number, because the mean of its divisors is an integer number (7742520).

Almost surely, 2^77345655 is an apocalyptic number.

77345655 is a deficient number, since it is larger than the sum of its proper divisors (46534665).

77345655 is a wasteful number, since it uses less digits than its factorization.

77345655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310.

The product of its digits is 441000, while the sum is 42.

The square root of 77345655 is about 8794.6378549659. The cubic root of 77345655 is about 426.0677282163.

The spelling of 77345655 in words is "seventy-seven million, three hundred forty-five thousand, six hundred fifty-five".