72727469 has 2 divisors, whose sum is σ = 72727470. Its totient is φ = 72727468.

The previous prime is 72727463. The next prime is 72727477. The reversal of 72727469 is 96472727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68475625 + 4251844 = 8275^2 + 2062^2 .

It is a cyclic number.

It is not a de Polignac number, because 72727469 - 2⁴ = 72727453 is a prime.

It is a super-2 number, since 2×72727469² = 10578569494291922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72727463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36363734 + 36363735.

It is an arithmetic number, because the mean of its divisors is an integer number (36363735).

Almost surely, 2^72727469 is an apocalyptic number.

It is an amenable number.

72727469 is a deficient number, since it is larger than the sum of its proper divisors (1).

72727469 is an equidigital number, since it uses as much as digits as its factorization.

72727469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 44.

The square root of 72727469 is about 8528.0401617253. The cubic root of 72727469 is about 417.4131799819.

It can be divided in two parts, 7272 and 7469, that added together give a palindrome (14741).

The spelling of 72727469 in words is "seventy-two million, seven hundred twenty-seven thousand, four hundred sixty-nine".