220666347 has 24 divisors (see below), whose sum is σ = 362838528. Its totient is φ = 127921200.

The previous prime is 220666343. The next prime is 220666351. The reversal of 220666347 is 743666022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (220666343) and next prime (220666351).

It is not a de Polignac number, because 220666347 - 2² = 220666343 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (220666343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46179 + ... + 50732.

It is an arithmetic number, because the mean of its divisors is an integer number (15118272).

Almost surely, 2^220666347 is an apocalyptic number.

220666347 is a deficient number, since it is larger than the sum of its proper divisors (142172181).

220666347 is a wasteful number, since it uses less digits than its factorization.

220666347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96951 (or 96948 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 220666347 is about 14854.8425437633. The cubic root of 220666347 is about 604.2899458388.

The spelling of 220666347 in words is "two hundred twenty million, six hundred sixty-six thousand, three hundred forty-seven".