64404546 has 16 divisors (see below), whose sum is σ = 132964608. Its totient is φ = 20775600.

The previous prime is 64404533. The next prime is 64404581. The reversal of 64404546 is 64540446.

It is a super-2 number, since 2×64404546² = 8295891090932232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172945 + ... + 173316.

It is an arithmetic number, because the mean of its divisors is an integer number (8310288).

Almost surely, 2^64404546 is an apocalyptic number.

64404546 is an abundant number, since it is smaller than the sum of its proper divisors (68560062).

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

64404546 is a wasteful number, since it uses less digits than its factorization.

64404546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346297.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 64404546 is about 8025.2442953470. The cubic root of 64404546 is about 400.8410345794.

The spelling of 64404546 in words is "sixty-four million, four hundred four thousand, five hundred forty-six".