97290621 has 48 divisors (see below), whose sum is σ = 159868800. Its totient is φ = 56681856.

The previous prime is 97290619. The next prime is 97290629. The reversal of 97290621 is 12609279.

97290621 is a `hidden beast` number, since 9 + 7 + 29 + 0 + 621 = 666.

It is not a de Polignac number, because 97290621 - 2¹ = 97290619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97290629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113631 + ... + 114483.

It is an arithmetic number, because the mean of its divisors is an integer number (3330600).

Almost surely, 2^97290621 is an apocalyptic number.

It is an amenable number.

97290621 is a deficient number, since it is larger than the sum of its proper divisors (62578179).

97290621 is a wasteful number, since it uses less digits than its factorization.

97290621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 97290621 is about 9863.6008130905. The cubic root of 97290621 is about 459.9285033808.

The spelling of 97290621 in words is "ninety-seven million, two hundred ninety thousand, six hundred twenty-one".