97790706593 has 2 divisors, whose sum is σ = 97790706594. Its totient is φ = 97790706592.

The previous prime is 97790706571. The next prime is 97790706623. The reversal of 97790706593 is 39560709779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69367444129 + 28423262464 = 263377^2 + 168592^2 .

It is a cyclic number.

It is not a de Polignac number, because 97790706593 - 2²² = 97786512289 is a prime.

It is not a weakly prime, because it can be changed into another prime (97790708593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48895353296 + 48895353297.

It is an arithmetic number, because the mean of its divisors is an integer number (48895353297).

Almost surely, 2^97790706593 is an apocalyptic number.

It is an amenable number.

97790706593 is a deficient number, since it is larger than the sum of its proper divisors (1).

97790706593 is an equidigital number, since it uses as much as digits as its factorization.

97790706593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22504230, while the sum is 62.

The spelling of 97790706593 in words is "ninety-seven billion, seven hundred ninety million, seven hundred six thousand, five hundred ninety-three".