76462721 has 2 divisors, whose sum is σ = 76462722. Its totient is φ = 76462720.

The previous prime is 76462699. The next prime is 76462723. The reversal of 76462721 is 12726467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54184321 + 22278400 = 7361^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 76462721 - 2⁶ = 76462657 is a prime.

Together with 76462723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76462723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38231360 + 38231361.

It is an arithmetic number, because the mean of its divisors is an integer number (38231361).

Almost surely, 2^76462721 is an apocalyptic number.

It is an amenable number.

76462721 is a deficient number, since it is larger than the sum of its proper divisors (1).

76462721 is an equidigital number, since it uses as much as digits as its factorization.

76462721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 76462721 is about 8744.2964839946. The cubic root of 76462721 is about 424.4402707671.

The spelling of 76462721 in words is "seventy-six million, four hundred sixty-two thousand, seven hundred twenty-one".