66605662 has 16 divisors (see below), whose sum is σ = 101369232. Its totient is φ = 32819200.

The previous prime is 66605657. The next prime is 66605713. The reversal of 66605662 is 26650666.

It is a congruent number.

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, 51273 + ... + 52555.

It is an arithmetic number, because the mean of its divisors is an integer number (6335577).

Almost surely, 2^66605662 is an apocalyptic number.

66605662 is a deficient number, since it is larger than the sum of its proper divisors (34763570).

66605662 is a wasteful number, since it uses less digits than its factorization.

66605662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 66605662 is about 8161.2291966345. The cubic root of 66605662 is about 405.3564143917.

The spelling of 66605662 in words is "sixty-six million, six hundred five thousand, six hundred sixty-two".