76921673 has 2 divisors, whose sum is σ = 76921674. Its totient is φ = 76921672.

The previous prime is 76921619. The next prime is 76921693. The reversal of 76921673 is 37612967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73068304 + 3853369 = 8548^2 + 1963^2 .

It is a cyclic number.

It is not a de Polignac number, because 76921673 - 2⁶ = 76921609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76921673.

It is not a weakly prime, because it can be changed into another prime (76921693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38460836 + 38460837.

It is an arithmetic number, because the mean of its divisors is an integer number (38460837).

Almost surely, 2^76921673 is an apocalyptic number.

It is an amenable number.

76921673 is a deficient number, since it is larger than the sum of its proper divisors (1).

76921673 is an equidigital number, since it uses as much as digits as its factorization.

76921673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 76921673 is about 8770.5001567756. The cubic root of 76921673 is about 425.2877829424.

The spelling of 76921673 in words is "seventy-six million, nine hundred twenty-one thousand, six hundred seventy-three".