76665313 has 4 divisors (see below), whose sum is σ = 77635840. Its totient is φ = 75694788.

The previous prime is 76665293. The next prime is 76665317. The reversal of 76665313 is 31356667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76665313 - 2⁹ = 76664801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76665317) 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, 485145 + ... + 485302.

It is an arithmetic number, because the mean of its divisors is an integer number (19408960).

Almost surely, 2^76665313 is an apocalyptic number.

It is an amenable number.

76665313 is a deficient number, since it is larger than the sum of its proper divisors (970527).

76665313 is an equidigital number, since it uses as much as digits as its factorization.

76665313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970526.

The product of its digits is 68040, while the sum is 37.

The square root of 76665313 is about 8755.8730575540. The cubic root of 76665313 is about 424.8147991228.

The spelling of 76665313 in words is "seventy-six million, six hundred sixty-five thousand, three hundred thirteen".