72683549 has 2 divisors, whose sum is σ = 72683550. Its totient is φ = 72683548.

The previous prime is 72683537. The next prime is 72683563. The reversal of 72683549 is 94538627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50310649 + 22372900 = 7093^2 + 4730^2 .

It is a cyclic number.

It is not a de Polignac number, because 72683549 - 2⁸ = 72683293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72683509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36341774 + 36341775.

It is an arithmetic number, because the mean of its divisors is an integer number (36341775).

Almost surely, 2^72683549 is an apocalyptic number.

It is an amenable number.

72683549 is a deficient number, since it is larger than the sum of its proper divisors (1).

72683549 is an equidigital number, since it uses as much as digits as its factorization.

72683549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 72683549 is about 8525.4647380656. The cubic root of 72683549 is about 417.3291380157.

The spelling of 72683549 in words is "seventy-two million, six hundred eighty-three thousand, five hundred forty-nine".