72488077 has 2 divisors, whose sum is σ = 72488078. Its totient is φ = 72488076.

The previous prime is 72488071. The next prime is 72488093. The reversal of 72488077 is 77088427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54671236 + 17816841 = 7394^2 + 4221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72488077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72488071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36244038 + 36244039.

It is an arithmetic number, because the mean of its divisors is an integer number (36244039).

Almost surely, 2^72488077 is an apocalyptic number.

It is an amenable number.

72488077 is a deficient number, since it is larger than the sum of its proper divisors (1).

72488077 is an equidigital number, since it uses as much as digits as its factorization.

72488077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 72488077 is about 8513.9930115076. The cubic root of 72488077 is about 416.9546864789.

The spelling of 72488077 in words is "seventy-two million, four hundred eighty-eight thousand, seventy-seven".