66244586 has 8 divisors (see below), whose sum is σ = 99783360. Its totient is φ = 32983468.

The previous prime is 66244579. The next prime is 66244609. The reversal of 66244586 is 68544266.

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

It is a super-2 number, since 2×66244586² = 8776690348622792, which contains 22 as substring.

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, 68816 + ... + 69771.

It is an arithmetic number, because the mean of its divisors is an integer number (12472920).

Almost surely, 2^66244586 is an apocalyptic number.

66244586 is a deficient number, since it is larger than the sum of its proper divisors (33538774).

66244586 is a wasteful number, since it uses less digits than its factorization.

66244586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138828.

The product of its digits is 276480, while the sum is 41.

The square root of 66244586 is about 8139.0777118787. The cubic root of 66244586 is about 404.6225941065.

The spelling of 66244586 in words is "sixty-six million, two hundred forty-four thousand, five hundred eighty-six".