66674886 has 32 divisors (see below), whose sum is σ = 139004640. Its totient is φ = 21294336.

The previous prime is 66674843. The next prime is 66674911. The reversal of 66674886 is 68847666.

It is a super-2 number, since 2×66674886² = 8891080846225992, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22440 + ... + 25236.

It is an arithmetic number, because the mean of its divisors is an integer number (4343895).

Almost surely, 2^66674886 is an apocalyptic number.

66674886 is an abundant number, since it is smaller than the sum of its proper divisors (72329754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66674886 is a wasteful number, since it uses less digits than its factorization.

66674886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968.

The product of its digits is 2322432, while the sum is 51.

The square root of 66674886 is about 8165.4691230817. The cubic root of 66674886 is about 405.4967962353.

The spelling of 66674886 in words is "sixty-six million, six hundred seventy-four thousand, eight hundred eighty-six".