76684973 has 2 divisors, whose sum is σ = 76684974. Its totient is φ = 76684972.

The previous prime is 76684919. The next prime is 76684997. The reversal of 76684973 is 37948667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54434884 + 22250089 = 7378^2 + 4717^2 .

It is a cyclic number.

It is not a de Polignac number, because 76684973 - 2⁸ = 76684717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76684073) 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, 38342486 + 38342487.

It is an arithmetic number, because the mean of its divisors is an integer number (38342487).

Almost surely, 2^76684973 is an apocalyptic number.

It is an amenable number.

76684973 is a deficient number, since it is larger than the sum of its proper divisors (1).

76684973 is an equidigital number, since it uses as much as digits as its factorization.

76684973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 50.

The square root of 76684973 is about 8756.9956606133. The cubic root of 76684973 is about 424.8511090906.

The spelling of 76684973 in words is "seventy-six million, six hundred eighty-four thousand, nine hundred seventy-three".