97567921 has 8 divisors (see below), whose sum is σ = 106696800. Its totient is φ = 88482240.

The previous prime is 97567901. The next prime is 97567933. The reversal of 97567921 is 12976579.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97567921 - 2⁵ = 97567889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97567901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5976 + ... + 15193.

It is an arithmetic number, because the mean of its divisors is an integer number (13337100).

Almost surely, 2^97567921 is an apocalyptic number.

It is an amenable number.

97567921 is a deficient number, since it is larger than the sum of its proper divisors (9128879).

97567921 is a wasteful number, since it uses less digits than its factorization.

97567921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21599.

The product of its digits is 238140, while the sum is 46.

The square root of 97567921 is about 9877.6475438234. The cubic root of 97567921 is about 460.3650552067.

The spelling of 97567921 in words is "ninety-seven million, five hundred sixty-seven thousand, nine hundred twenty-one".