97618613 has 2 divisors, whose sum is σ = 97618614. Its totient is φ = 97618612.

The previous prime is 97618603. The next prime is 97618639. The reversal of 97618613 is 31681679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94439524 + 3179089 = 9718^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 97618613 - 2⁸ = 97618357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97618603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48809306 + 48809307.

It is an arithmetic number, because the mean of its divisors is an integer number (48809307).

Almost surely, 2^97618613 is an apocalyptic number.

It is an amenable number.

97618613 is a deficient number, since it is larger than the sum of its proper divisors (1).

97618613 is an equidigital number, since it uses as much as digits as its factorization.

97618613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 97618613 is about 9880.2132062016. The cubic root of 97618613 is about 460.4447698804. Note that the first 3 decimals are identical.

The spelling of 97618613 in words is "ninety-seven million, six hundred eighteen thousand, six hundred thirteen".