86957811 has 6 divisors (see below), whose sum is σ = 125605740. Its totient is φ = 57971868.

The previous prime is 86957803. The next prime is 86957831. The reversal of 86957811 is 11875968.

86957811 is a `hidden beast` number, since 8 + 69 + 578 + 11 = 666.

It is not a de Polignac number, because 86957811 - 2³ = 86957803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86957831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4830981 + ... + 4830998.

It is an arithmetic number, because the mean of its divisors is an integer number (20934290).

Almost surely, 2^86957811 is an apocalyptic number.

86957811 is a deficient number, since it is larger than the sum of its proper divisors (38647929).

86957811 is a wasteful number, since it uses less digits than its factorization.

86957811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9661985 (or 9661982 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 86957811 is about 9325.1172110596. The cubic root of 86957811 is about 443.0331255049.

The spelling of 86957811 in words is "eighty-six million, nine hundred fifty-seven thousand, eight hundred eleven".