97081693 has 4 divisors (see below), whose sum is σ = 97102368. Its totient is φ = 97061020.

The previous prime is 97081681. The next prime is 97081709. The reversal of 97081693 is 39618079.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39618079 = 197 ⋅201107.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97081693 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 (97081093) 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, 480 + ... + 13942.

It is an arithmetic number, because the mean of its divisors is an integer number (24275592).

Almost surely, 2^97081693 is an apocalyptic number.

It is an amenable number.

97081693 is a deficient number, since it is larger than the sum of its proper divisors (20675).

97081693 is a wasteful number, since it uses less digits than its factorization.

97081693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20674.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 97081693 is about 9853.0042626602. The cubic root of 97081693 is about 459.5990409647.

The spelling of 97081693 in words is "ninety-seven million, eighty-one thousand, six hundred ninety-three".