64440014 has 8 divisors (see below), whose sum is σ = 99272568. Its totient is φ = 31349160.

The previous prime is 64440011. The next prime is 64440023. The reversal of 64440014 is 41004446.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64440011) 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, 435332 + ... + 435479.

It is an arithmetic number, because the mean of its divisors is an integer number (12409071).

Almost surely, 2^64440014 is an apocalyptic number.

64440014 is a deficient number, since it is larger than the sum of its proper divisors (34832554).

64440014 is a wasteful number, since it uses less digits than its factorization.

64440014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870850.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 64440014 is about 8027.4537681634. The cubic root of 64440014 is about 400.9146029929.

The spelling of 64440014 in words is "sixty-four million, four hundred forty thousand, fourteen".