64644014 has 8 divisors (see below), whose sum is σ = 97254768. Its totient is φ = 32225760.

The previous prime is 64644011. The next prime is 64644017. The reversal of 64644014 is 41044646.

It is an interprime number because it is at equal distance from previous prime (64644011) and next prime (64644017).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64644011) 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, 47282 + ... + 48629.

It is an arithmetic number, because the mean of its divisors is an integer number (12156846).

Almost surely, 2^64644014 is an apocalyptic number.

64644014 is a deficient number, since it is larger than the sum of its proper divisors (32610754).

64644014 is a wasteful number, since it uses less digits than its factorization.

64644014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96250.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 64644014 is about 8040.1501229766. The cubic root of 64644014 is about 401.3372204554.

The spelling of 64644014 in words is "sixty-four million, six hundred forty-four thousand, fourteen".