84997577 has 4 divisors (see below), whose sum is σ = 97140096. Its totient is φ = 72855060.

The previous prime is 84997559. The next prime is 84997597. The reversal of 84997577 is 77579948.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84997577 - 2¹⁰ = 84996553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84997537) 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 3 ways as a sum of consecutive naturals, for example, 6071249 + ... + 6071262.

It is an arithmetic number, because the mean of its divisors is an integer number (24285024).

Almost surely, 2^84997577 is an apocalyptic number.

It is an amenable number.

84997577 is a deficient number, since it is larger than the sum of its proper divisors (12142519).

84997577 is a wasteful number, since it uses less digits than its factorization.

84997577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12142518.

The product of its digits is 4445280, while the sum is 56.

The square root of 84997577 is about 9219.4130507316. The cubic root of 84997577 is about 439.6787893258.

The spelling of 84997577 in words is "eighty-four million, nine hundred ninety-seven thousand, five hundred seventy-seven".