76321091 has 16 divisors (see below), whose sum is σ = 97182720. Its totient is φ = 58202880.

The previous prime is 76321079. The next prime is 76321097. The reversal of 76321091 is 19012367.

It is a cyclic number.

It is not a de Polignac number, because 76321091 - 2⁶ = 76321027 is a prime.

It is a super-3 number, since 3×76321091³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76321097) 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, 6926 + ... + 14163.

It is an arithmetic number, because the mean of its divisors is an integer number (6073920).

Almost surely, 2^76321091 is an apocalyptic number.

76321091 is a deficient number, since it is larger than the sum of its proper divisors (20861629).

76321091 is a wasteful number, since it uses less digits than its factorization.

76321091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21154.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 76321091 is about 8736.1943087365. The cubic root of 76321091 is about 424.1780487389.

The spelling of 76321091 in words is "seventy-six million, three hundred twenty-one thousand, ninety-one".