66074666 has 16 divisors (see below), whose sum is σ = 119232960. Its totient is φ = 26827200.

The previous prime is 66074641. The next prime is 66074681. The reversal of 66074666 is 66647066.

It is a super-2 number, since 2×66074666² = 8731722974023112, which contains 22 as substring.

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, 123935 + ... + 124466.

It is an arithmetic number, because the mean of its divisors is an integer number (7452060).

Almost surely, 2^66074666 is an apocalyptic number.

66074666 is a deficient number, since it is larger than the sum of its proper divisors (53158294).

66074666 is a wasteful number, since it uses less digits than its factorization.

66074666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248429.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 66074666 is about 8128.6324803130. The cubic root of 66074666 is about 404.2763401992.

The spelling of 66074666 in words is "sixty-six million, seventy-four thousand, six hundred sixty-six".