87120464 has 10 divisors (see below), whose sum is σ = 168795930. Its totient is φ = 43560224.

The previous prime is 87120457. The next prime is 87120487. The reversal of 87120464 is 46402178.

It can be written as a sum of positive squares in only one way, i.e., 86862400 + 258064 = 9320^2 + 508^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87120464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2722499 + ... + 2722530.

It is an arithmetic number, because the mean of its divisors is an integer number (16879593).

Almost surely, 2^87120464 is an apocalyptic number.

It is an amenable number.

87120464 is a deficient number, since it is larger than the sum of its proper divisors (81675466).

87120464 is a wasteful number, since it uses less digits than its factorization.

87120464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445037 (or 5445031 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 87120464 is about 9333.8343675041. The cubic root of 87120464 is about 443.3091819181.

The spelling of 87120464 in words is "eighty-seven million, one hundred twenty thousand, four hundred sixty-four".