64944715 has 16 divisors (see below), whose sum is σ = 86100480. Its totient is φ = 46631520.

The previous prime is 64944703. The next prime is 64944787. The reversal of 64944715 is 51744946.

It is not a de Polignac number, because 64944715 - 2¹⁹ = 64420427 is a prime.

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, 3129 + ... + 11818.

It is an arithmetic number, because the mean of its divisors is an integer number (5381280).

Almost surely, 2^64944715 is an apocalyptic number.

64944715 is a deficient number, since it is larger than the sum of its proper divisors (21155765).

64944715 is a wasteful number, since it uses less digits than its factorization.

64944715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15042.

The product of its digits is 120960, while the sum is 40.

The square root of 64944715 is about 8058.8283887920. The cubic root of 64944715 is about 401.9585507952.

The spelling of 64944715 in words is "sixty-four million, nine hundred forty-four thousand, seven hundred fifteen".