97838661 has 4 divisors (see below), whose sum is σ = 130451552. Its totient is φ = 65225772.

The previous prime is 97838651. The next prime is 97838681. The reversal of 97838661 is 16683879.

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 not a de Polignac number, because 97838661 - 2⁶ = 97838597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 97838661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97838651) 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, 16306441 + ... + 16306446.

It is an arithmetic number, because the mean of its divisors is an integer number (32612888).

Almost surely, 2^97838661 is an apocalyptic number.

It is an amenable number.

97838661 is a deficient number, since it is larger than the sum of its proper divisors (32612891).

97838661 is a wasteful number, since it uses less digits than its factorization.

97838661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32612890.

The product of its digits is 435456, while the sum is 48.

The square root of 97838661 is about 9891.3427298825. The cubic root of 97838661 is about 460.7904823504.

The spelling of 97838661 in words is "ninety-seven million, eight hundred thirty-eight thousand, six hundred sixty-one".