97656947 has 4 divisors (see below), whose sum is σ = 97851600. Its totient is φ = 97462296.

The previous prime is 97656931. The next prime is 97656961. The reversal of 97656947 is 74965679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74965679 = 89 ⋅842311.

It is a cyclic number.

It is not a de Polignac number, because 97656947 - 2⁴ = 97656931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97656917) 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, 96572 + ... + 97577.

It is an arithmetic number, because the mean of its divisors is an integer number (24462900).

Almost surely, 2^97656947 is an apocalyptic number.

97656947 is a deficient number, since it is larger than the sum of its proper divisors (194653).

97656947 is a wasteful number, since it uses less digits than its factorization.

97656947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194652.

The product of its digits is 2857680, while the sum is 53.

The square root of 97656947 is about 9882.1529536837. The cubic root of 97656947 is about 460.5050329093.

The spelling of 97656947 in words is "ninety-seven million, six hundred fifty-six thousand, nine hundred forty-seven".