86942657 has 4 divisors (see below), whose sum is σ = 87062976. Its totient is φ = 86822340.

The previous prime is 86942579. The next prime is 86942663. The reversal of 86942657 is 75624968.

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 86942657 - 2¹⁶ = 86877121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86942677) 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, 59069 + ... + 60522.

It is an arithmetic number, because the mean of its divisors is an integer number (21765744).

Almost surely, 2^86942657 is an apocalyptic number.

It is an amenable number.

86942657 is a deficient number, since it is larger than the sum of its proper divisors (120319).

86942657 is a wasteful number, since it uses less digits than its factorization.

86942657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120318.

The product of its digits is 725760, while the sum is 47.

The square root of 86942657 is about 9324.3046389530. The cubic root of 86942657 is about 443.0073884495.

The spelling of 86942657 in words is "eighty-six million, nine hundred forty-two thousand, six hundred fifty-seven".