97758613 has 2 divisors, whose sum is σ = 97758614. Its totient is φ = 97758612.

The previous prime is 97758611. The next prime is 97758641. The reversal of 97758613 is 31685779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70946929 + 26811684 = 8423^2 + 5178^2 .

It is a cyclic number.

It is not a de Polignac number, because 97758613 - 2¹ = 97758611 is a prime.

Together with 97758611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97758611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48879306 + 48879307.

It is an arithmetic number, because the mean of its divisors is an integer number (48879307).

Almost surely, 2^97758613 is an apocalyptic number.

It is an amenable number.

97758613 is a deficient number, since it is larger than the sum of its proper divisors (1).

97758613 is an equidigital number, since it uses as much as digits as its factorization.

97758613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 97758613 is about 9887.2955351805. The cubic root of 97758613 is about 460.6647807782.

The spelling of 97758613 in words is "ninety-seven million, seven hundred fifty-eight thousand, six hundred thirteen".