72804077 has 2 divisors, whose sum is σ = 72804078. Its totient is φ = 72804076.

The previous prime is 72804041. The next prime is 72804091. The reversal of 72804077 is 77040827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61011721 + 11792356 = 7811^2 + 3434^2 .

It is a cyclic number.

It is not a de Polignac number, because 72804077 - 2¹⁰ = 72803053 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 (72804037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36402038 + 36402039.

It is an arithmetic number, because the mean of its divisors is an integer number (36402039).

Almost surely, 2^72804077 is an apocalyptic number.

It is an amenable number.

72804077 is a deficient number, since it is larger than the sum of its proper divisors (1).

72804077 is an equidigital number, since it uses as much as digits as its factorization.

72804077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 72804077 is about 8532.5305156208. The cubic root of 72804077 is about 417.5596902716.

The spelling of 72804077 in words is "seventy-two million, eight hundred four thousand, seventy-seven".