76744961 has 2 divisors, whose sum is σ = 76744962. Its totient is φ = 76744960.

The previous prime is 76744939. The next prime is 76744963. The reversal of 76744961 is 16944767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38688400 + 38056561 = 6220^2 + 6169^2 .

It is a cyclic number.

It is not a de Polignac number, because 76744961 - 2¹⁰ = 76743937 is a prime.

Together with 76744963, 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 (76744963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38372480 + 38372481.

It is an arithmetic number, because the mean of its divisors is an integer number (38372481).

Almost surely, 2^76744961 is an apocalyptic number.

It is an amenable number.

76744961 is a deficient number, since it is larger than the sum of its proper divisors (1).

76744961 is an equidigital number, since it uses as much as digits as its factorization.

76744961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 76744961 is about 8760.4201383267. The cubic root of 76744961 is about 424.9618623217.

The spelling of 76744961 in words is "seventy-six million, seven hundred forty-four thousand, nine hundred sixty-one".