86706615690 has 48 divisors (see below), whose sum is σ = 226430369568. Its totient is φ = 23019900768.

The previous prime is 86706615673. The next prime is 86706615713. The reversal of 86706615690 is 9651660768.

86706615690 is a `hidden beast` number, since 8 + 6 + 70 + 6 + 6 + 1 + 569 + 0 = 666.

It is a super-2 number, since 2×86706615690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2101612 + ... + 2142471.

It is an arithmetic number, because the mean of its divisors is an integer number (4717299366).

Almost surely, 2^86706615690 is an apocalyptic number.

86706615690 is an abundant number, since it is smaller than the sum of its proper divisors (139723753878).

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

86706615690 is a wasteful number, since it uses less digits than its factorization.

86706615690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244323 (or 4244320 counting only the distinct ones).

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

The spelling of 86706615690 in words is "eighty-six billion, seven hundred six million, six hundred fifteen thousand, six hundred ninety".