272369681 has 2 divisors, whose sum is σ = 272369682. Its totient is φ = 272369680.

The previous prime is 272369659. The next prime is 272369687. The reversal of 272369681 is 186963272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208513600 + 63856081 = 14440^2 + 7991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272369681 is a prime.

It is a super-2 number, since 2×272369681² = 148370486256083522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (272369687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136184840 + 136184841.

It is an arithmetic number, because the mean of its divisors is an integer number (136184841).

Almost surely, 2^272369681 is an apocalyptic number.

It is an amenable number.

272369681 is a deficient number, since it is larger than the sum of its proper divisors (1).

272369681 is an equidigital number, since it uses as much as digits as its factorization.

272369681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 272369681 is about 16503.6262984836. The cubic root of 272369681 is about 648.2157624045.

The spelling of 272369681 in words is "two hundred seventy-two million, three hundred sixty-nine thousand, six hundred eighty-one".