64814451 has 16 divisors (see below), whose sum is σ = 94192896. Its totient is φ = 39403296.

The previous prime is 64814447. The next prime is 64814531. The reversal of 64814451 is 15441846.

It is not a de Polignac number, because 64814451 - 2² = 64814447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64814401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6775 + ... + 13248.

It is an arithmetic number, because the mean of its divisors is an integer number (5887056).

Almost surely, 2^64814451 is an apocalyptic number.

64814451 is a deficient number, since it is larger than the sum of its proper divisors (29378445).

64814451 is a wasteful number, since it uses less digits than its factorization.

64814451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20122.

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

The square root of 64814451 is about 8050.7422639158. The cubic root of 64814451 is about 401.6896257793.

The spelling of 64814451 in words is "sixty-four million, eight hundred fourteen thousand, four hundred fifty-one".