97664433 has 4 divisors (see below), whose sum is σ = 130219248. Its totient is φ = 65109620.

The previous prime is 97664429. The next prime is 97664467. The reversal of 97664433 is 33446679.

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.

It is a cyclic number.

It is not a de Polignac number, because 97664433 - 2² = 97664429 is a prime.

It is a super-2 number, since 2×97664433² = 19076682946422978, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (97664533) 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, 16277403 + ... + 16277408.

It is an arithmetic number, because the mean of its divisors is an integer number (32554812).

Almost surely, 2^97664433 is an apocalyptic number.

It is an amenable number.

97664433 is a deficient number, since it is larger than the sum of its proper divisors (32554815).

97664433 is a wasteful number, since it uses less digits than its factorization.

97664433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32554814.

The product of its digits is 326592, while the sum is 42.

The square root of 97664433 is about 9882.5317100427. The cubic root of 97664433 is about 460.5167994475.

The spelling of 97664433 in words is "ninety-seven million, six hundred sixty-four thousand, four hundred thirty-three".