66133766 has 16 divisors (see below), whose sum is σ = 101123664. Its totient is φ = 32431104.

The previous prime is 66133751. The next prime is 66133783. The reversal of 66133766 is 66733166.

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, 27005 + ... + 29351.

It is an arithmetic number, because the mean of its divisors is an integer number (6320229).

Almost surely, 2^66133766 is an apocalyptic number.

66133766 is a deficient number, since it is larger than the sum of its proper divisors (34989898).

66133766 is a wasteful number, since it uses less digits than its factorization.

66133766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615.

The product of its digits is 81648, while the sum is 38.

The square root of 66133766 is about 8132.2669656130. The cubic root of 66133766 is about 404.3968382818.

The spelling of 66133766 in words is "sixty-six million, one hundred thirty-three thousand, seven hundred sixty-six".