64451418 has 32 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 20716080.

The previous prime is 64451417. The next prime is 64451459. The reversal of 64451418 is 81415446.

It is not an unprimeable number, because it can be changed into a prime (64451417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77521 + ... + 78347.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^64451418 is an apocalyptic number.

64451418 is an abundant number, since it is smaller than the sum of its proper divisors (69088422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64451418 is a wasteful number, since it uses less digits than its factorization.

64451418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282.

The product of its digits is 15360, while the sum is 33.

The square root of 64451418 is about 8028.1640491460. The cubic root of 64451418 is about 400.9382516555.

The spelling of 64451418 in words is "sixty-four million, four hundred fifty-one thousand, four hundred eighteen".