76380891 has 4 divisors (see below), whose sum is σ = 101841192. Its totient is φ = 50920592.

The previous prime is 76380859. The next prime is 76380901. The reversal of 76380891 is 19808367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19808367 = 3 ⋅6602789.

It is a cyclic number.

It is not a de Polignac number, because 76380891 - 2⁵ = 76380859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76380391) 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, 12730146 + ... + 12730151.

It is an arithmetic number, because the mean of its divisors is an integer number (25460298).

Almost surely, 2^76380891 is an apocalyptic number.

76380891 is a deficient number, since it is larger than the sum of its proper divisors (25460301).

76380891 is a wasteful number, since it uses less digits than its factorization.

76380891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25460300.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 76380891 is about 8739.6161815036. The cubic root of 76380891 is about 424.2888054768.

The spelling of 76380891 in words is "seventy-six million, three hundred eighty thousand, eight hundred ninety-one".