84570961 has 4 divisors (see below), whose sum is σ = 84620800. Its totient is φ = 84521124.

The previous prime is 84570947. The next prime is 84570979. The reversal of 84570961 is 16907548.

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 84570961 - 2⁵ = 84570929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84574961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22281 + ... + 25798.

It is an arithmetic number, because the mean of its divisors is an integer number (21155200).

Almost surely, 2^84570961 is an apocalyptic number.

It is an amenable number.

84570961 is a deficient number, since it is larger than the sum of its proper divisors (49839).

84570961 is a wasteful number, since it uses less digits than its factorization.

84570961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49838.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 84570961 is about 9196.2471149921. The cubic root of 84570961 is about 438.9419498691.

The spelling of 84570961 in words is "eighty-four million, five hundred seventy thousand, nine hundred sixty-one".