97618723 has 2 divisors, whose sum is σ = 97618724. Its totient is φ = 97618722.

The previous prime is 97618699. The next prime is 97618757. The reversal of 97618723 is 32781679.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97618723 - 2⁹ = 97618211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97618723.

It is not a weakly prime, because it can be changed into another prime (97658723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48809361 + 48809362.

It is an arithmetic number, because the mean of its divisors is an integer number (48809362).

Almost surely, 2^97618723 is an apocalyptic number.

97618723 is a deficient number, since it is larger than the sum of its proper divisors (1).

97618723 is an equidigital number, since it uses as much as digits as its factorization.

97618723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 97618723 is about 9880.2187728815. The cubic root of 97618723 is about 460.4449428286. Note that the first 3 decimals are identical.

The spelling of 97618723 in words is "ninety-seven million, six hundred eighteen thousand, seven hundred twenty-three".