64457449 has 16 divisors (see below), whose sum is σ = 75081600. Its totient is φ = 54198144.

The previous prime is 64457429. The next prime is 64457483. The reversal of 64457449 is 94475446.

It is not a de Polignac number, because 64457449 - 2¹¹ = 64455401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64457429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97482 + ... + 98140.

It is an arithmetic number, because the mean of its divisors is an integer number (4692600).

Almost surely, 2^64457449 is an apocalyptic number.

It is an amenable number.

64457449 is a deficient number, since it is larger than the sum of its proper divisors (10624151).

64457449 is a wasteful number, since it uses less digits than its factorization.

64457449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912.

The product of its digits is 483840, while the sum is 43.

The square root of 64457449 is about 8028.5396555040. The cubic root of 64457449 is about 400.9507571118.

The spelling of 64457449 in words is "sixty-four million, four hundred fifty-seven thousand, four hundred forty-nine".