97770313 has 2 divisors, whose sum is σ = 97770314. Its totient is φ = 97770312.

The previous prime is 97770307. The next prime is 97770329. The reversal of 97770313 is 31307779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88510464 + 9259849 = 9408^2 + 3043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97770313 is a prime.

It is not a weakly prime, because it can be changed into another prime (97770913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48885156 + 48885157.

It is an arithmetic number, because the mean of its divisors is an integer number (48885157).

Almost surely, 2^97770313 is an apocalyptic number.

It is an amenable number.

97770313 is a deficient number, since it is larger than the sum of its proper divisors (1).

97770313 is an equidigital number, since it uses as much as digits as its factorization.

97770313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27783, while the sum is 37.

The square root of 97770313 is about 9887.8871858451. The cubic root of 97770313 is about 460.6831578902.

The spelling of 97770313 in words is "ninety-seven million, seven hundred seventy thousand, three hundred thirteen".