97706021 has 16 divisors (see below), whose sum is σ = 118786176. Its totient is φ = 78452736.

The previous prime is 97705991. The next prime is 97706027. The reversal of 97706021 is 12060779.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97706021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97706027) 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, 25205 + ... + 28821.

It is an arithmetic number, because the mean of its divisors is an integer number (7424136).

Almost surely, 2^97706021 is an apocalyptic number.

It is an amenable number.

97706021 is a deficient number, since it is larger than the sum of its proper divisors (21080155).

97706021 is a wasteful number, since it uses less digits than its factorization.

97706021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 97706021 is about 9884.6356027929. The cubic root of 97706021 is about 460.5821567608.

The spelling of 97706021 in words is "ninety-seven million, seven hundred six thousand, twenty-one".