97985711 has 4 divisors (see below), whose sum is σ = 99834552. Its totient is φ = 96136872.

The previous prime is 97985689. The next prime is 97985737. The reversal of 97985711 is 11758979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11758979 = 107 ⋅109897.

It is a cyclic number.

It is not a de Polignac number, because 97985711 - 2¹⁰ = 97984687 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 (97985791) 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, 924341 + ... + 924446.

It is an arithmetic number, because the mean of its divisors is an integer number (24958638).

Almost surely, 2^97985711 is an apocalyptic number.

97985711 is a deficient number, since it is larger than the sum of its proper divisors (1848841).

97985711 is a wasteful number, since it uses less digits than its factorization.

97985711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848840.

The product of its digits is 158760, while the sum is 47.

The square root of 97985711 is about 9898.7732068171. The cubic root of 97985711 is about 461.0212204554.

The spelling of 97985711 in words is "ninety-seven million, nine hundred eighty-five thousand, seven hundred eleven".