97622921 has 6 divisors (see below), whose sum is σ = 107304666. Its totient is φ = 88748000.

The previous prime is 97622869. The next prime is 97622923. The reversal of 97622921 is 12922679.

It can be written as a sum of positive squares in only one way, i.e., 96924025 + 698896 = 9845^2 + 836^2 .

It is not a de Polignac number, because 97622921 - 2¹⁰ = 97621897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97622923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403280 + ... + 403521.

It is an arithmetic number, because the mean of its divisors is an integer number (17884111).

Almost surely, 2^97622921 is an apocalyptic number.

It is an amenable number.

97622921 is a deficient number, since it is larger than the sum of its proper divisors (9681745).

97622921 is a wasteful number, since it uses less digits than its factorization.

97622921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806823 (or 806812 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 97622921 is about 9880.4312152861. The cubic root of 97622921 is about 460.4515430658.

The spelling of 97622921 in words is "ninety-seven million, six hundred twenty-two thousand, nine hundred twenty-one".