72763529 has 2 divisors, whose sum is σ = 72763530. Its totient is φ = 72763528.

The previous prime is 72763511. The next prime is 72763543. The reversal of 72763529 is 92536727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58171129 + 14592400 = 7627^2 + 3820^2 .

It is an emirp because it is prime and its reverse (92536727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72763529 - 2¹² = 72759433 is a prime.

It is not a weakly prime, because it can be changed into another prime (72763829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36381764 + 36381765.

It is an arithmetic number, because the mean of its divisors is an integer number (36381765).

Almost surely, 2^72763529 is an apocalyptic number.

It is an amenable number.

72763529 is a deficient number, since it is larger than the sum of its proper divisors (1).

72763529 is an equidigital number, since it uses as much as digits as its factorization.

72763529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The square root of 72763529 is about 8530.1541017733. The cubic root of 72763529 is about 417.4821563603.

The spelling of 72763529 in words is "seventy-two million, seven hundred sixty-three thousand, five hundred twenty-nine".