84977565 has 16 divisors (see below), whose sum is σ = 136728000. Its totient is φ = 45066752.

The previous prime is 84977561. The next prime is 84977573. The reversal of 84977565 is 56577948.

It is a cyclic number.

It is not a de Polignac number, because 84977565 - 2² = 84977561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84977561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13140 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (8545500).

Almost surely, 2^84977565 is an apocalyptic number.

It is an amenable number.

84977565 is a deficient number, since it is larger than the sum of its proper divisors (51750435).

84977565 is a wasteful number, since it uses less digits than its factorization.

84977565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31836.

The product of its digits is 2116800, while the sum is 51.

The square root of 84977565 is about 9218.3276682921. The cubic root of 84977565 is about 439.6442803321.

The spelling of 84977565 in words is "eighty-four million, nine hundred seventy-seven thousand, five hundred sixty-five".