64451416 has 16 divisors (see below), whose sum is σ = 121176000. Its totient is φ = 32137824.

The previous prime is 64451407. The next prime is 64451417. The reversal of 64451416 is 61415446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64451417) 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, 7816 + ... + 13783.

It is an arithmetic number, because the mean of its divisors is an integer number (7573500).

Almost surely, 2^64451416 is an apocalyptic number.

It is an amenable number.

64451416 is a deficient number, since it is larger than the sum of its proper divisors (56724584).

64451416 is a wasteful number, since it uses less digits than its factorization.

64451416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21978 (or 21974 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 64451416 is about 8028.1639245845. The cubic root of 64451416 is about 400.9382475083.

The spelling of 64451416 in words is "sixty-four million, four hundred fifty-one thousand, four hundred sixteen".