78880087 has 32 divisors (see below), whose sum is σ = 100154880. Its totient is φ = 61057920.

The previous prime is 78880073. The next prime is 78880093. The reversal of 78880087 is 78008887.

It is not a de Polignac number, because 78880087 - 2¹⁹ = 78355799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78880037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94968 + ... + 95794.

It is an arithmetic number, because the mean of its divisors is an integer number (3129840).

Almost surely, 2^78880087 is an apocalyptic number.

78880087 is a deficient number, since it is larger than the sum of its proper divisors (21274793).

78880087 is a wasteful number, since it uses less digits than its factorization.

78880087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903.

The product of its (nonzero) digits is 200704, while the sum is 46.

The square root of 78880087 is about 8881.4462223221. The cubic root of 78880087 is about 428.8668325341.

It can be divided in two parts, 788800 and 87, that added together give a palindrome (788887).

The spelling of 78880087 in words is "seventy-eight million, eight hundred eighty thousand, eighty-seven".