87880385 has 4 divisors (see below), whose sum is σ = 105456468. Its totient is φ = 70304304.

The previous prime is 87880363. The next prime is 87880391. The reversal of 87880385 is 58308878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11282881 + 76597504 = 3359^2 + 8752^2 .

It is a cyclic number.

It is not a de Polignac number, because 87880385 - 2⁸ = 87880129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8788034 + ... + 8788043.

It is an arithmetic number, because the mean of its divisors is an integer number (26364117).

Almost surely, 2^87880385 is an apocalyptic number.

It is an amenable number.

87880385 is a deficient number, since it is larger than the sum of its proper divisors (17576083).

87880385 is a wasteful number, since it uses less digits than its factorization.

87880385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17576082.

The product of its (nonzero) digits is 430080, while the sum is 47.

The square root of 87880385 is about 9374.4538507585. The cubic root of 87880385 is about 444.5943953862.

The spelling of 87880385 in words is "eighty-seven million, eight hundred eighty thousand, three hundred eighty-five".