221670675 has 42 divisors (see below), whose sum is σ = 412152812. Its totient is φ = 118214640.

The previous prime is 221670661. The next prime is 221670689. The reversal of 221670675 is 576076122.

It is an interprime number because it is at equal distance from previous prime (221670661) and next prime (221670689).

It is not a de Polignac number, because 221670675 - 2⁵ = 221670643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 12144 + ... + 24306.

Almost surely, 2^221670675 is an apocalyptic number.

221670675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221670675 is a deficient number, since it is larger than the sum of its proper divisors (190482137).

221670675 is an equidigital number, since it uses as much as digits as its factorization.

221670675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191 (or 12171 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 221670675 is about 14888.6089007671. The cubic root of 221670675 is about 605.2053352151.

The spelling of 221670675 in words is "two hundred twenty-one million, six hundred seventy thousand, six hundred seventy-five".