72348769 has 2 divisors, whose sum is σ = 72348770. Its totient is φ = 72348768.

The previous prime is 72348743. The next prime is 72348779. The reversal of 72348769 is 96784327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54582544 + 17766225 = 7388^2 + 4215^2 .

It is a cyclic number.

It is not a de Polignac number, because 72348769 - 2¹¹ = 72346721 is a prime.

It is a super-2 number, since 2×72348769² = 10468688751630722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72348709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36174384 + 36174385.

It is an arithmetic number, because the mean of its divisors is an integer number (36174385).

Almost surely, 2^72348769 is an apocalyptic number.

It is an amenable number.

72348769 is a deficient number, since it is larger than the sum of its proper divisors (1).

72348769 is an equidigital number, since it uses as much as digits as its factorization.

72348769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 72348769 is about 8505.8079569198. The cubic root of 72348769 is about 416.6874132248.

The spelling of 72348769 in words is "seventy-two million, three hundred forty-eight thousand, seven hundred sixty-nine".