667670226 has 16 divisors (see below), whose sum is σ = 1354148928. Its totient is φ = 219422000.

The previous prime is 667670221. The next prime is 667670231. The reversal of 667670226 is 622076766.

It is an interprime number because it is at equal distance from previous prime (667670221) and next prime (667670231).

It is not an unprimeable number, because it can be changed into a prime (667670221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 783225 + ... + 784076.

It is an arithmetic number, because the mean of its divisors is an integer number (84634308).

Almost surely, 2^667670226 is an apocalyptic number.

667670226 is an abundant number, since it is smaller than the sum of its proper divisors (686478702).

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

667670226 is a wasteful number, since it uses less digits than its factorization.

667670226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567377.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 667670226 is about 25839.3155095099. The cubic root of 667670226 is about 874.0185898819.

The spelling of 667670226 in words is "six hundred sixty-seven million, six hundred seventy thousand, two hundred twenty-six".