97260891 has 32 divisors (see below), whose sum is σ = 161441280. Its totient is φ = 50713344.

The previous prime is 97260881. The next prime is 97260913. The reversal of 97260891 is 19806279.

It is not a de Polignac number, because 97260891 - 2⁷ = 97260763 is a prime.

It is a super-2 number, since 2×97260891² = 18919361836227762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97260881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22296 + ... + 26298.

It is an arithmetic number, because the mean of its divisors is an integer number (5045040).

Almost surely, 2^97260891 is an apocalyptic number.

97260891 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

97260891 is a deficient number, since it is larger than the sum of its proper divisors (64180389).

97260891 is a wasteful number, since it uses less digits than its factorization.

97260891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 97260891 is about 9862.0936418187. The cubic root of 97260891 is about 459.8816503978.

The spelling of 97260891 in words is "ninety-seven million, two hundred sixty thousand, eight hundred ninety-one".