97478965 has 4 divisors (see below), whose sum is σ = 116974764. Its totient is φ = 77983168.

The previous prime is 97478963. The next prime is 97478993. The reversal of 97478965 is 56987479.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65318724 + 32160241 = 8082^2 + 5671^2 .

It is a cyclic number.

It is not a de Polignac number, because 97478965 - 2¹ = 97478963 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 (97478963) 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, 9747892 + ... + 9747901.

It is an arithmetic number, because the mean of its divisors is an integer number (29243691).

Almost surely, 2^97478965 is an apocalyptic number.

It is an amenable number.

97478965 is a deficient number, since it is larger than the sum of its proper divisors (19495799).

97478965 is a wasteful number, since it uses less digits than its factorization.

97478965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19495798.

The product of its digits is 3810240, while the sum is 55.

The square root of 97478965 is about 9873.1436229805. The cubic root of 97478965 is about 460.2251024928.

The spelling of 97478965 in words is "ninety-seven million, four hundred seventy-eight thousand, nine hundred sixty-five".