97790706623 has 2 divisors, whose sum is σ = 97790706624. Its totient is φ = 97790706622.

The previous prime is 97790706593. The next prime is 97790706631. The reversal of 97790706623 is 32660709779.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97790706623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97790702623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48895353311 + 48895353312.

It is an arithmetic number, because the mean of its divisors is an integer number (48895353312).

Almost surely, 2^97790706623 is an apocalyptic number.

97790706623 is a deficient number, since it is larger than the sum of its proper divisors (1).

97790706623 is an equidigital number, since it uses as much as digits as its factorization.

97790706623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6001128, while the sum is 56.

The spelling of 97790706623 in words is "ninety-seven billion, seven hundred ninety million, seven hundred six thousand, six hundred twenty-three".