667222284 has 24 divisors (see below), whose sum is σ = 1558106928. Its totient is φ = 222228160.

The previous prime is 667222279. The next prime is 667222319. The reversal of 667222284 is 482222766.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6447 + ... + 37094.

It is an arithmetic number, because the mean of its divisors is an integer number (64921122).

Almost surely, 2^667222284 is an apocalyptic number.

It is an amenable number.

667222284 is an abundant number, since it is smaller than the sum of its proper divisors (890884644).

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

667222284 is a wasteful number, since it uses less digits than its factorization.

667222284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44825 (or 44823 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 667222284 is about 25830.6462172358. The cubic root of 667222284 is about 873.8230855707.

It can be divided in two parts, 66722 and 2284, that added together give a triangular number (69006 = T₃₇₁).

The spelling of 667222284 in words is "six hundred sixty-seven million, two hundred twenty-two thousand, two hundred eighty-four".