64404066 has 16 divisors (see below), whose sum is σ = 128937600. Its totient is φ = 21446448.

The previous prime is 64404061. The next prime is 64404073. The reversal of 64404066 is 66040446.

It is not an unprimeable number, because it can be changed into a prime (64404061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1815 + ... + 11493.

It is an arithmetic number, because the mean of its divisors is an integer number (8058600).

Almost surely, 2^64404066 is an apocalyptic number.

64404066 is an abundant number, since it is smaller than the sum of its proper divisors (64533534).

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

64404066 is a wasteful number, since it uses less digits than its factorization.

64404066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 64404066 is about 8025.2143896596. The cubic root of 64404066 is about 400.8400387689.

The spelling of 64404066 in words is "sixty-four million, four hundred four thousand, sixty-six".