775990087 has 8 divisors (see below), whose sum is σ = 781218000. Its totient is φ = 770778624.

The previous prime is 775990079. The next prime is 775990099. The reversal of 775990087 is 780099577.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 775990087 - 2³ = 775990079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775990387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99048 + ... + 106594.

It is an arithmetic number, because the mean of its divisors is an integer number (97652250).

Almost surely, 2^775990087 is an apocalyptic number.

775990087 is a deficient number, since it is larger than the sum of its proper divisors (5227913).

775990087 is a wasteful number, since it uses less digits than its factorization.

775990087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8225.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The square root of 775990087 is about 27856.5986258193. The cubic root of 775990087 is about 918.9362654290.

The spelling of 775990087 in words is "seven hundred seventy-five million, nine hundred ninety thousand, eighty-seven".