64544546 has 48 divisors (see below), whose sum is σ = 116779320. Its totient is φ = 26611200.

The previous prime is 64544533. The next prime is 64544549.

64544546 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 59459521 + 5085025 = 7711^2 + 2255^2 .

It is a super-2 number, since 2×64544546² = 8331996836692232, which contains 22 as substring.

Its product of digits (230400) is a multiple of the sum of its prime divisors (600).

It is not an unprimeable number, because it can be changed into a prime (64544549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119036 + ... + 119576.

Almost surely, 2^64544546 is an apocalyptic number.

64544546 is a deficient number, since it is larger than the sum of its proper divisors (52234774).

64544546 is a wasteful number, since it uses less digits than its factorization.

64544546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 600 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The square root of 64544546 is about 8033.9620362558. The cubic root of 64544546 is about 401.1312683967.

The spelling of 64544546 in words is "sixty-four million, five hundred forty-four thousand, five hundred forty-six".