76132321 has 4 divisors (see below), whose sum is σ = 76156612. Its totient is φ = 76108032.

The previous prime is 76132313. The next prime is 76132333. The reversal of 76132321 is 12323167.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43230625 + 32901696 = 6575^2 + 5736^2 .

It is a cyclic number.

It is not a de Polignac number, because 76132321 - 2³ = 76132313 is a prime.

It is a super-2 number, since 2×76132321² = 11592260601694082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76132351) 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, 6600 + ... + 13993.

It is an arithmetic number, because the mean of its divisors is an integer number (19039153).

Almost surely, 2^76132321 is an apocalyptic number.

It is an amenable number.

76132321 is a deficient number, since it is larger than the sum of its proper divisors (24291).

76132321 is a wasteful number, since it uses less digits than its factorization.

76132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24290.

The product of its digits is 1512, while the sum is 25.

The square root of 76132321 is about 8725.3837164906. The cubic root of 76132321 is about 423.8280441467.

Adding to 76132321 its reverse (12323167), we get a palindrome (88455488).

The spelling of 76132321 in words is "seventy-six million, one hundred thirty-two thousand, three hundred twenty-one".