97757823 has 4 divisors (see below), whose sum is σ = 130343768. Its totient is φ = 65171880.

The previous prime is 97757801. The next prime is 97757887. The reversal of 97757823 is 32875779.

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

It is not a de Polignac number, because 97757823 - 2⁹ = 97757311 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 (97757893) 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, 16292968 + ... + 16292973.

It is an arithmetic number, because the mean of its divisors is an integer number (32585942).

Almost surely, 2^97757823 is an apocalyptic number.

97757823 is a deficient number, since it is larger than the sum of its proper divisors (32585945).

97757823 is a wasteful number, since it uses less digits than its factorization.

97757823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32585944.

The product of its digits is 740880, while the sum is 48.

The square root of 97757823 is about 9887.2555848425. The cubic root of 97757823 is about 460.6635398776.

The spelling of 97757823 in words is "ninety-seven million, seven hundred fifty-seven thousand, eight hundred twenty-three".