207220361 has 8 divisors (see below), whose sum is σ = 219660840. Its totient is φ = 194807808.

The previous prime is 207220333. The next prime is 207220367. The reversal of 207220361 is 163022702.

It can be written as a sum of positive squares in 4 ways, for example, as 2157961 + 205062400 = 1469^2 + 14320^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207220361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207220367) 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, 9425 + ... + 22433.

It is an arithmetic number, because the mean of its divisors is an integer number (27457605).

Almost surely, 2^207220361 is an apocalyptic number.

It is an amenable number.

207220361 is a deficient number, since it is larger than the sum of its proper divisors (12440479).

207220361 is a wasteful number, since it uses less digits than its factorization.

207220361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13963.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 207220361 is about 14395.1506070621. The cubic root of 207220361 is about 591.7580055862.

The spelling of 207220361 in words is "two hundred seven million, two hundred twenty thousand, three hundred sixty-one".