86870488644 has 27 divisors (see below), whose sum is σ = 219593761023. Its totient is φ = 28956240072.

The previous prime is 86870488609. The next prime is 86870488651. The reversal of 86870488644 is 44688407868.

The square root of 86870488644 is 294738.

It is a perfect power (a square), and thus also a powerful number.

86870488644 is a `hidden beast` number, since 86 + 8 + 70 + 488 + 6 + 4 + 4 = 666.

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 8 ways as a sum of consecutive naturals, for example, 1743867 + ... + 1792989.

Almost surely, 2^86870488644 is an apocalyptic number.

86870488644 is the 294738-th square number.

It is an amenable number.

86870488644 is an abundant number, since it is smaller than the sum of its proper divisors (132723272379).

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

86870488644 is an frugal number, since it uses more digits than its factorization.

86870488644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98256 (or 49128 counting only the distinct ones).

The product of its (nonzero) digits is 66060288, while the sum is 63.

The spelling of 86870488644 in words is "eighty-six billion, eight hundred seventy million, four hundred eighty-eight thousand, six hundred forty-four".