97722797 has 4 divisors (see below), whose sum is σ = 97787040. Its totient is φ = 97658556.

The previous prime is 97722787. The next prime is 97722799. The reversal of 97722797 is 79722779.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97722797 - 2⁶ = 97722733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97722799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29783 + ... + 32900.

It is an arithmetic number, because the mean of its divisors is an integer number (24446760).

Almost surely, 2^97722797 is an apocalyptic number.

It is an amenable number.

97722797 is a deficient number, since it is larger than the sum of its proper divisors (64243).

97722797 is a wasteful number, since it uses less digits than its factorization.

97722797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64242.

The product of its digits is 777924, while the sum is 50.

The square root of 97722797 is about 9885.4841560745. The cubic root of 97722797 is about 460.6085157098.

The spelling of 97722797 in words is "ninety-seven million, seven hundred twenty-two thousand, seven hundred ninety-seven".