76320157 has 4 divisors (see below), whose sum is σ = 80809596. Its totient is φ = 71830720.

The previous prime is 76320133. The next prime is 76320163. The reversal of 76320157 is 75102367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75102367 = 31 ⋅2422657.

It can be written as a sum of positive squares in 2 ways, for example, as 24393721 + 51926436 = 4939^2 + 7206^2 .

It is a cyclic number.

It is not a de Polignac number, because 76320157 - 2⁷ = 76320029 is a prime.

It is a super-3 number, since 3×76320157³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76320107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2244694 + ... + 2244727.

It is an arithmetic number, because the mean of its divisors is an integer number (20202399).

Almost surely, 2^76320157 is an apocalyptic number.

It is an amenable number.

76320157 is a deficient number, since it is larger than the sum of its proper divisors (4489439).

76320157 is a wasteful number, since it uses less digits than its factorization.

76320157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489438.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 76320157 is about 8736.1408528022. The cubic root of 76320157 is about 424.1763184006.

The spelling of 76320157 in words is "seventy-six million, three hundred twenty thousand, one hundred fifty-seven".