66004646 has 8 divisors (see below), whose sum is σ = 99288504. Its totient is φ = 32908480.

The previous prime is 66004607. The next prime is 66004661. The reversal of 66004646 is 64640066.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66004646² = 8713226587170632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46040 + ... + 47451.

It is an arithmetic number, because the mean of its divisors is an integer number (12411063).

Almost surely, 2^66004646 is an apocalyptic number.

66004646 is a deficient number, since it is larger than the sum of its proper divisors (33283858).

66004646 is a wasteful number, since it uses less digits than its factorization.

66004646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93846.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 66004646 is about 8124.3243411375. The cubic root of 66004646 is about 404.1334844666.

The spelling of 66004646 in words is "sixty-six million, four thousand, six hundred forty-six".