220641739 has 2 divisors, whose sum is σ = 220641740. Its totient is φ = 220641738.

The previous prime is 220641719. The next prime is 220641761. The reversal of 220641739 is 937146022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220641739 - 2⁷ = 220641611 is a prime.

It is equal to p_12155866 and since 220641739 and 12155866 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (220641709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110320869 + 110320870.

It is an arithmetic number, because the mean of its divisors is an integer number (110320870).

Almost surely, 2^220641739 is an apocalyptic number.

220641739 is a deficient number, since it is larger than the sum of its proper divisors (1).

220641739 is an equidigital number, since it uses as much as digits as its factorization.

220641739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 220641739 is about 14854.0142385821. The cubic root of 220641739 is about 604.2674821812.

The spelling of 220641739 in words is "two hundred twenty million, six hundred forty-one thousand, seven hundred thirty-nine".