97775723 has 2 divisors, whose sum is σ = 97775724. Its totient is φ = 97775722.

The previous prime is 97775681. The next prime is 97775731. The reversal of 97775723 is 32757779.

It is a strong prime.

It is an emirp because it is prime and its reverse (32757779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97775723 - 2⁶ = 97775659 is a prime.

It is not a weakly prime, because it can be changed into another prime (97775123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48887861 + 48887862.

It is an arithmetic number, because the mean of its divisors is an integer number (48887862).

Almost surely, 2^97775723 is an apocalyptic number.

97775723 is a deficient number, since it is larger than the sum of its proper divisors (1).

97775723 is an equidigital number, since it uses as much as digits as its factorization.

97775723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648270, while the sum is 47.

The square root of 97775723 is about 9888.1607490979. The cubic root of 97775723 is about 460.6916548454.

The spelling of 97775723 in words is "ninety-seven million, seven hundred seventy-five thousand, seven hundred twenty-three".