97491723 has 12 divisors (see below), whose sum is σ = 151211880. Its totient is φ = 55709472.

The previous prime is 97491721. The next prime is 97491739. The reversal of 97491723 is 32719479.

It is not a de Polignac number, because 97491723 - 2¹ = 97491721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97491721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331458 + ... + 331751.

It is an arithmetic number, because the mean of its divisors is an integer number (12600990).

Almost surely, 2^97491723 is an apocalyptic number.

97491723 is a deficient number, since it is larger than the sum of its proper divisors (53720157).

97491723 is a wasteful number, since it uses less digits than its factorization.

97491723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663226 (or 663219 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 97491723 is about 9873.7896979832. The cubic root of 97491723 is about 460.2451796302.

The spelling of 97491723 in words is "ninety-seven million, four hundred ninety-one thousand, seven hundred twenty-three".