86949657 has 24 divisors (see below), whose sum is σ = 128356800. Its totient is φ = 56701728.

The previous prime is 86949649. The next prime is 86949659. The reversal of 86949657 is 75694968.

It is not a de Polignac number, because 86949657 - 2³ = 86949649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86949659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197844 + ... + 198282.

It is an arithmetic number, because the mean of its divisors is an integer number (5348200).

Almost surely, 2^86949657 is an apocalyptic number.

It is an amenable number.

86949657 is a deficient number, since it is larger than the sum of its proper divisors (41407143).

86949657 is a wasteful number, since it uses less digits than its factorization.

86949657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 86949657 is about 9324.6799945092. The cubic root of 86949657 is about 443.0192773910.

The spelling of 86949657 in words is "eighty-six million, nine hundred forty-nine thousand, six hundred fifty-seven".