86761957 has 4 divisors (see below), whose sum is σ = 90534240. Its totient is φ = 82989676.

The previous prime is 86761951. The next prime is 86761973. The reversal of 86761957 is 75916768.

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 a de Polignac number, because none of the positive numbers 2^k-86761957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86761957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86761951) 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, 1886107 + ... + 1886152.

It is an arithmetic number, because the mean of its divisors is an integer number (22633560).

Almost surely, 2^86761957 is an apocalyptic number.

It is an amenable number.

86761957 is a deficient number, since it is larger than the sum of its proper divisors (3772283).

86761957 is a wasteful number, since it uses less digits than its factorization.

86761957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772282.

The product of its digits is 635040, while the sum is 49.

The square root of 86761957 is about 9314.6098683734. The cubic root of 86761957 is about 442.7002628063.

The spelling of 86761957 in words is "eighty-six million, seven hundred sixty-one thousand, nine hundred fifty-seven".