64424649 has 8 divisors (see below), whose sum is σ = 90420640. Its totient is φ = 40689216.

The previous prime is 64424623. The next prime is 64424651. The reversal of 64424649 is 94642446.

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

It is not a de Polignac number, because 64424649 - 2²¹ = 62327497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64424149) 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, 565072 + ... + 565185.

It is an arithmetic number, because the mean of its divisors is an integer number (11302580).

Almost surely, 2^64424649 is an apocalyptic number.

It is an amenable number.

64424649 is a deficient number, since it is larger than the sum of its proper divisors (25995991).

64424649 is a wasteful number, since it uses less digits than its factorization.

64424649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130279.

The product of its digits is 165888, while the sum is 39.

The square root of 64424649 is about 8026.4966828623. The cubic root of 64424649 is about 400.8827359269.

The spelling of 64424649 in words is "sixty-four million, four hundred twenty-four thousand, six hundred forty-nine".