64475641 has 8 divisors (see below), whose sum is σ = 65881664. Its totient is φ = 63082800.

The previous prime is 64475633. The next prime is 64475687. The reversal of 64475641 is 14657446.

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 64475641 - 2³ = 64475633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64475641.

It is not an unprimeable number, because it can be changed into a prime (64470641) 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, 6931 + ... + 13303.

It is an arithmetic number, because the mean of its divisors is an integer number (8235208).

Almost surely, 2^64475641 is an apocalyptic number.

It is an amenable number.

64475641 is a deficient number, since it is larger than the sum of its proper divisors (1406023).

64475641 is a wasteful number, since it uses less digits than its factorization.

64475641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591.

The product of its digits is 80640, while the sum is 37.

The square root of 64475641 is about 8029.6725337961. The cubic root of 64475641 is about 400.9884740356.

The spelling of 64475641 in words is "sixty-four million, four hundred seventy-five thousand, six hundred forty-one".