97768757 has 2 divisors, whose sum is σ = 97768758. Its totient is φ = 97768756.

The previous prime is 97768753. The next prime is 97768777. The reversal of 97768757 is 75786779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49688401 + 48080356 = 7049^2 + 6934^2 .

It is a cyclic number.

It is not a de Polignac number, because 97768757 - 2² = 97768753 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97768753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48884378 + 48884379.

It is an arithmetic number, because the mean of its divisors is an integer number (48884379).

Almost surely, 2^97768757 is an apocalyptic number.

It is an amenable number.

97768757 is a deficient number, since it is larger than the sum of its proper divisors (1).

97768757 is an equidigital number, since it uses as much as digits as its factorization.

97768757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5186160, while the sum is 56.

The square root of 97768757 is about 9887.8085034046. The cubic root of 97768757 is about 460.6807139759.

The spelling of 97768757 in words is "ninety-seven million, seven hundred sixty-eight thousand, seven hundred fifty-seven".