64197694 has 32 divisors (see below), whose sum is σ = 111144960. Its totient is φ = 27504000.

The previous prime is 64197689. The next prime is 64197709. The reversal of 64197694 is 49679146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159894 + ... + 160294.

It is an arithmetic number, because the mean of its divisors is an integer number (3473280).

Almost surely, 2^64197694 is an apocalyptic number.

64197694 is a deficient number, since it is larger than the sum of its proper divisors (46947266).

64197694 is a wasteful number, since it uses less digits than its factorization.

64197694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

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

The square root of 64197694 is about 8012.3463479807. The cubic root of 64197694 is about 400.4114391495.

The spelling of 64197694 in words is "sixty-four million, one hundred ninety-seven thousand, six hundred ninety-four".