220670951 has 2 divisors, whose sum is σ = 220670952. Its totient is φ = 220670950.

The previous prime is 220670909. The next prime is 220670963. The reversal of 220670951 is 159076022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220670951 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220670981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110335475 + 110335476.

It is an arithmetic number, because the mean of its divisors is an integer number (110335476).

Almost surely, 2^220670951 is an apocalyptic number.

220670951 is a deficient number, since it is larger than the sum of its proper divisors (1).

220670951 is an equidigital number, since it uses as much as digits as its factorization.

220670951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 220670951 is about 14854.9975092559. The cubic root of 220670951 is about 604.2941484605.

The spelling of 220670951 in words is "two hundred twenty million, six hundred seventy thousand, nine hundred fifty-one".