97908261 has 16 divisors (see below), whose sum is σ = 147007488. Its totient is φ = 57423600.

The previous prime is 97908203. The next prime is 97908271. The reversal of 97908261 is 16280979.

It is not a de Polignac number, because 97908261 - 2⁹ = 97907749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97908271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46831 + ... + 48876.

It is an arithmetic number, because the mean of its divisors is an integer number (9187968).

Almost surely, 2^97908261 is an apocalyptic number.

It is an amenable number.

97908261 is a deficient number, since it is larger than the sum of its proper divisors (49099227).

97908261 is a wasteful number, since it uses less digits than its factorization.

97908261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95752.

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

The square root of 97908261 is about 9894.8603325161. The cubic root of 97908261 is about 460.8997214296.

The spelling of 97908261 in words is "ninety-seven million, nine hundred eight thousand, two hundred sixty-one".