87983617464 has 24 divisors (see below), whose sum is σ = 238288964160. Its totient is φ = 29327872464.

The previous prime is 87983617451. The next prime is 87983617489. The reversal of 87983617464 is 46471638978.

87983617464 is a `hidden beast` number, since 8 + 7 + 9 + 8 + 3 + 617 + 4 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×87983617464² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 610997272 + ... + 610997415.

It is an arithmetic number, because the mean of its divisors is an integer number (9928706840).

Almost surely, 2^87983617464 is an apocalyptic number.

It is an amenable number.

87983617464 is an abundant number, since it is smaller than the sum of its proper divisors (150305346696).

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

87983617464 is a wasteful number, since it uses less digits than its factorization.

87983617464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221994699 (or 1221994692 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 87983617464 in words is "eighty-seven billion, nine hundred eighty-three million, six hundred seventeen thousand, four hundred sixty-four".