76861013 has 2 divisors, whose sum is σ = 76861014. Its totient is φ = 76861012.

The previous prime is 76861003. The next prime is 76861021. The reversal of 76861013 is 31016867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76352644 + 508369 = 8738^2 + 713^2 .

It is a cyclic number.

It is not a de Polignac number, because 76861013 - 2²⁰ = 75812437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76861003) 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 as a sum of consecutive naturals, namely, 38430506 + 38430507.

It is an arithmetic number, because the mean of its divisors is an integer number (38430507).

Almost surely, 2^76861013 is an apocalyptic number.

It is an amenable number.

76861013 is a deficient number, since it is larger than the sum of its proper divisors (1).

76861013 is an equidigital number, since it uses as much as digits as its factorization.

76861013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 76861013 is about 8767.0412911084. The cubic root of 76861013 is about 425.1759603561.

The spelling of 76861013 in words is "seventy-six million, eight hundred sixty-one thousand, thirteen".