97581623 has 8 divisors (see below), whose sum is σ = 98648880. Its totient is φ = 96520320.

The previous prime is 97581611. The next prime is 97581629. The reversal of 97581623 is 32618579.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97581623 - 2⁶ = 97581559 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 (97581629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36548 + ... + 39126.

It is an arithmetic number, because the mean of its divisors is an integer number (12331110).

Almost surely, 2^97581623 is an apocalyptic number.

97581623 is a deficient number, since it is larger than the sum of its proper divisors (1067257).

97581623 is a wasteful number, since it uses less digits than its factorization.

97581623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977.

The product of its digits is 90720, while the sum is 41.

The square root of 97581623 is about 9878.3411056715. The cubic root of 97581623 is about 460.3866047306.

The spelling of 97581623 in words is "ninety-seven million, five hundred eighty-one thousand, six hundred twenty-three".