87656464 has 40 divisors (see below), whose sum is σ = 194987520. Its totient is φ = 37394688.

The previous prime is 87656461. The next prime is 87656467. The reversal of 87656464 is 46465678.

It is an interprime number because it is at equal distance from previous prime (87656461) and next prime (87656467).

It is not an unprimeable number, because it can be changed into a prime (87656461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24417 + ... + 27775.

It is an arithmetic number, because the mean of its divisors is an integer number (4874688).

Almost surely, 2^87656464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87656464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97493760).

87656464 is an abundant number, since it is smaller than the sum of its proper divisors (107331056).

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

87656464 is a wasteful number, since it uses less digits than its factorization.

87656464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 3601 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 87656464 is about 9362.5030841116. The cubic root of 87656464 is about 444.2164623707.

The spelling of 87656464 in words is "eighty-seven million, six hundred fifty-six thousand, four hundred sixty-four".