64811446 has 16 divisors (see below), whose sum is σ = 117641376. Its totient is φ = 26142336.

The previous prime is 64811443. The next prime is 64811459. The reversal of 64811446 is 64411846.

It is a super-2 number, since 2×64811446² = 8401047065221832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64811443) 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 7 ways as a sum of consecutive naturals, for example, 135921 + ... + 136396.

It is an arithmetic number, because the mean of its divisors is an integer number (7352586).

Almost surely, 2^64811446 is an apocalyptic number.

64811446 is a deficient number, since it is larger than the sum of its proper divisors (52829930).

64811446 is a wasteful number, since it uses less digits than its factorization.

64811446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272343.

The product of its digits is 18432, while the sum is 34.

The square root of 64811446 is about 8050.5556329983. Note that the first 3 decimals coincide. The cubic root of 64811446 is about 401.6834178223.

The spelling of 64811446 in words is "sixty-four million, eight hundred eleven thousand, four hundred forty-six".