78099087 has 16 divisors (see below), whose sum is σ = 114543360. Its totient is φ = 47330360.

The previous prime is 78099083. The next prime is 78099089.

78099087 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78099087 - 2² = 78099083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78099083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5787 + ... + 13772.

It is an arithmetic number, because the mean of its divisors is an integer number (7158960).

Almost surely, 2^78099087 is an apocalyptic number.

78099087 is a deficient number, since it is larger than the sum of its proper divisors (36444273).

78099087 is a wasteful number, since it uses less digits than its factorization.

78099087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19595 (or 19573 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 78099087 is about 8837.3687826185. The cubic root of 78099087 is about 427.4467167954.

The spelling of 78099087 in words is "seventy-eight million, ninety-nine thousand, eighty-seven".