64694197 has 8 divisors (see below), whose sum is σ = 69166656. Its totient is φ = 60295872.

The previous prime is 64694191. The next prime is 64694213. The reversal of 64694197 is 79149646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-64694197 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 (64694191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16723 + ... + 20224.

It is an arithmetic number, because the mean of its divisors is an integer number (8645832).

Almost surely, 2^64694197 is an apocalyptic number.

It is an amenable number.

64694197 is a deficient number, since it is larger than the sum of its proper divisors (4472459).

64694197 is a wasteful number, since it uses less digits than its factorization.

64694197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37067.

The product of its digits is 326592, while the sum is 46.

The square root of 64694197 is about 8043.2702926111. The cubic root of 64694197 is about 401.4410459818.

The spelling of 64694197 in words is "sixty-four million, six hundred ninety-four thousand, one hundred ninety-seven".