97607021 has 4 divisors (see below), whose sum is σ = 97652892. Its totient is φ = 97561152.

The previous prime is 97606987. The next prime is 97607071. The reversal of 97607021 is 12070679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12070679 = 997 ⋅12107.

It can be written as a sum of positive squares in 2 ways, for example, as 84897796 + 12709225 = 9214^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 97607021 - 2¹⁴ = 97590637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97607071) 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, 19580 + ... + 24053.

It is an arithmetic number, because the mean of its divisors is an integer number (24413223).

Almost surely, 2^97607021 is an apocalyptic number.

It is an amenable number.

97607021 is a deficient number, since it is larger than the sum of its proper divisors (45871).

97607021 is a wasteful number, since it uses less digits than its factorization.

97607021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45870.

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

The square root of 97607021 is about 9879.6265617684. The cubic root of 97607021 is about 460.4265435508.

The spelling of 97607021 in words is "ninety-seven million, six hundred seven thousand, twenty-one".