97664311 has 4 divisors (see below), whose sum is σ = 97690824. Its totient is φ = 97637800.

The previous prime is 97664297. The next prime is 97664363. The reversal of 97664311 is 11346679.

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

It is a cyclic number.

It is not a de Polignac number, because 97664311 - 2⁷ = 97664183 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97614311) 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, 6625 + ... + 15466.

It is an arithmetic number, because the mean of its divisors is an integer number (24422706).

Almost surely, 2^97664311 is an apocalyptic number.

97664311 is a deficient number, since it is larger than the sum of its proper divisors (26513).

97664311 is a wasteful number, since it uses less digits than its factorization.

97664311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26512.

The product of its digits is 27216, while the sum is 37.

The square root of 97664311 is about 9882.5255375334. The cubic root of 97664311 is about 460.5166076920.

The spelling of 97664311 in words is "ninety-seven million, six hundred sixty-four thousand, three hundred eleven".