72796993 has 2 divisors, whose sum is σ = 72796994. Its totient is φ = 72796992.

The previous prime is 72796967. The next prime is 72797029. The reversal of 72796993 is 39969727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45265984 + 27531009 = 6728^2 + 5247^2 .

It is a cyclic number.

It is not a de Polignac number, because 72796993 - 2¹⁷ = 72665921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72796993.

It is not a weakly prime, because it can be changed into another prime (72796963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36398496 + 36398497.

It is an arithmetic number, because the mean of its divisors is an integer number (36398497).

Almost surely, 2^72796993 is an apocalyptic number.

It is an amenable number.

72796993 is a deficient number, since it is larger than the sum of its proper divisors (1).

72796993 is an equidigital number, since it uses as much as digits as its factorization.

72796993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 52.

The square root of 72796993 is about 8532.1153883430. The cubic root of 72796993 is about 417.5461466675.

The spelling of 72796993 in words is "seventy-two million, seven hundred ninety-six thousand, nine hundred ninety-three".