253730669 has 2 divisors, whose sum is σ = 253730670. Its totient is φ = 253730668.

The previous prime is 253730651. The next prime is 253730677. The reversal of 253730669 is 966037352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181225444 + 72505225 = 13462^2 + 8515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253730669 is a prime.

It is a super-2 number, since 2×253730669² = 128758504782375122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253730689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126865334 + 126865335.

It is an arithmetic number, because the mean of its divisors is an integer number (126865335).

Almost surely, 2^253730669 is an apocalyptic number.

It is an amenable number.

253730669 is a deficient number, since it is larger than the sum of its proper divisors (1).

253730669 is an equidigital number, since it uses as much as digits as its factorization.

253730669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 41.

The square root of 253730669 is about 15928.9255444302. The cubic root of 253730669 is about 633.0786314392.

The spelling of 253730669 in words is "two hundred fifty-three million, seven hundred thirty thousand, six hundred sixty-nine".