86861577 has 8 divisors (see below), whose sum is σ = 126344160. Its totient is φ = 52643360.

The previous prime is 86861573. The next prime is 86861587. The reversal of 86861577 is 77516868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86861577 - 2² = 86861573 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86861573) 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 7 ways as a sum of consecutive naturals, for example, 1316052 + ... + 1316117.

It is an arithmetic number, because the mean of its divisors is an integer number (15793020).

Almost surely, 2^86861577 is an apocalyptic number.

It is an amenable number.

86861577 is a deficient number, since it is larger than the sum of its proper divisors (39482583).

86861577 is a wasteful number, since it uses less digits than its factorization.

86861577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632183.

The product of its digits is 564480, while the sum is 48.

The square root of 86861577 is about 9319.9558475349. The cubic root of 86861577 is about 442.8696340117.

The spelling of 86861577 in words is "eighty-six million, eight hundred sixty-one thousand, five hundred seventy-seven".