78080087 has 4 divisors (see below), whose sum is σ = 78120816. Its totient is φ = 78039360.

The previous prime is 78080083. The next prime is 78080089. The reversal of 78080087 is 78008087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78008087 = 17 ⋅4588711.

It is a cyclic number.

It is not a de Polignac number, because 78080087 - 2² = 78080083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78080087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78080081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17339 + ... + 21372.

It is an arithmetic number, because the mean of its divisors is an integer number (19530204).

Almost surely, 2^78080087 is an apocalyptic number.

78080087 is a deficient number, since it is larger than the sum of its proper divisors (40729).

78080087 is a wasteful number, since it uses less digits than its factorization.

78080087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40728.

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 78080087 is about 8836.2937366296. The cubic root of 78080087 is about 427.4120508062.

The spelling of 78080087 in words is "seventy-eight million, eighty thousand, eighty-seven".