66877284 has 24 divisors (see below), whose sum is σ = 162832320. Its totient is φ = 21323104.

The previous prime is 66877253. The next prime is 66877331. The reversal of 66877284 is 48277866.

It is a super-2 number, since 2×66877284² = 8945142230433312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120879 + ... + 121430.

It is an arithmetic number, because the mean of its divisors is an integer number (6784680).

Almost surely, 2^66877284 is an apocalyptic number.

It is an amenable number.

66877284 is an abundant number, since it is smaller than the sum of its proper divisors (95955036).

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

66877284 is a wasteful number, since it uses less digits than its factorization.

66877284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242339 (or 242337 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 66877284 is about 8177.8532635405. The cubic root of 66877284 is about 405.9066898735.

It can be divided in two parts, 66877 and 284, that added together give a triangular number (67161 = T₃₆₆).

The spelling of 66877284 in words is "sixty-six million, eight hundred seventy-seven thousand, two hundred eighty-four".