71796613 has 18 divisors (see below), whose sum is σ = 86208966. Its totient is φ = 59575824.

The previous prime is 71796553. The next prime is 71796653. The reversal of 71796613 is 31669717.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69856164 + 1940449 = 8358^2 + 1393^2 .

It is not a de Polignac number, because 71796613 - 2¹³ = 71788421 is a prime.

It is a Duffinian number.

Its product of digits (47628) is a multiple of the sum of its prime divisors (243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71796653) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 360688 + ... + 360886.

It is an arithmetic number, because the mean of its divisors is an integer number (4789387).

Almost surely, 2^71796613 is an apocalyptic number.

It is an amenable number.

71796613 is a deficient number, since it is larger than the sum of its proper divisors (14412353).

71796613 is an equidigital number, since it uses as much as digits as its factorization.

71796613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 243 counting only the distinct ones).

The product of its digits is 47628, while the sum is 40.

The square root of 71796613 is about 8473.2882047054. The cubic root of 71796613 is about 415.6246710985.

The spelling of 71796613 in words is "seventy-one million, seven hundred ninety-six thousand, six hundred thirteen".