86904775944 has 144 divisors (see below), whose sum is σ = 288204836400. Its totient is φ = 23523079104.

The previous prime is 86904775927. The next prime is 86904775961. The reversal of 86904775944 is 44957740968.

It is an interprime number because it is at equal distance from previous prime (86904775927) and next prime (86904775961).

It is a super-2 number, since 2×86904775944² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 581202 + ... + 715265.

It is an arithmetic number, because the mean of its divisors is an integer number (2001422475).

Almost surely, 2^86904775944 is an apocalyptic number.

86904775944 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

86904775944 is an abundant number, since it is smaller than the sum of its proper divisors (201300060456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86904775944 is a wasteful number, since it uses less digits than its factorization.

86904775944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296512 (or 1296498 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 86904775944 in words is "eighty-six billion, nine hundred four million, seven hundred seventy-five thousand, nine hundred forty-four".