97774013 has 2 divisors, whose sum is σ = 97774014. Its totient is φ = 97774012.

The previous prime is 97774007. The next prime is 97774037. The reversal of 97774013 is 31047779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82391929 + 15382084 = 9077^2 + 3922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97774013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97774003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48887006 + 48887007.

It is an arithmetic number, because the mean of its divisors is an integer number (48887007).

Almost surely, 2^97774013 is an apocalyptic number.

It is an amenable number.

97774013 is a deficient number, since it is larger than the sum of its proper divisors (1).

97774013 is an equidigital number, since it uses as much as digits as its factorization.

97774013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 97774013 is about 9888.0742816789. The cubic root of 97774013 is about 460.6889691504.

The spelling of 97774013 in words is "ninety-seven million, seven hundred seventy-four thousand, thirteen".