64477693 has 8 divisors (see below), whose sum is σ = 74419200. Its totient is φ = 54718800.

The previous prime is 64477681. The next prime is 64477703. The reversal of 64477693 is 39677446.

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

It is a cyclic number.

It is not a de Polignac number, because 64477693 - 2¹³ = 64469501 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 (64477663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44893 + ... + 46306.

It is an arithmetic number, because the mean of its divisors is an integer number (9302400).

Almost surely, 2^64477693 is an apocalyptic number.

It is an amenable number.

64477693 is a deficient number, since it is larger than the sum of its proper divisors (9941507).

64477693 is a wasteful number, since it uses less digits than its factorization.

64477693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91307.

The product of its digits is 762048, while the sum is 46.

The square root of 64477693 is about 8029.8003088495. The cubic root of 64477693 is about 400.9927279399.

The spelling of 64477693 in words is "sixty-four million, four hundred seventy-seven thousand, six hundred ninety-three".