76860913 has 4 divisors (see below), whose sum is σ = 76892148. Its totient is φ = 76829680.

The previous prime is 76860911. The next prime is 76860919. The reversal of 76860913 is 31906867.

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 24920064 + 51940849 = 4992^2 + 7207^2 .

It is a cyclic number.

It is not a de Polignac number, because 76860913 - 2¹ = 76860911 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76860911) 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, 11578 + ... + 16963.

It is an arithmetic number, because the mean of its divisors is an integer number (19223037).

Almost surely, 2^76860913 is an apocalyptic number.

It is an amenable number.

76860913 is a deficient number, since it is larger than the sum of its proper divisors (31235).

76860913 is a wasteful number, since it uses less digits than its factorization.

76860913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31234.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 76860913 is about 8767.0355879282. The cubic root of 76860913 is about 425.1757759643.

The spelling of 76860913 in words is "seventy-six million, eight hundred sixty thousand, nine hundred thirteen".