72076757 has 2 divisors, whose sum is σ = 72076758. Its totient is φ = 72076756.

The previous prime is 72076751. The next prime is 72076783. The reversal of 72076757 is 75767027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 34939921 = 6094^2 + 5911^2 .

It is a cyclic number.

It is not a de Polignac number, because 72076757 - 2¹⁶ = 72011221 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 (72076751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36038378 + 36038379.

It is an arithmetic number, because the mean of its divisors is an integer number (36038379).

Almost surely, 2^72076757 is an apocalyptic number.

It is an amenable number.

72076757 is a deficient number, since it is larger than the sum of its proper divisors (1).

72076757 is an equidigital number, since it uses as much as digits as its factorization.

72076757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144060, while the sum is 41.

The square root of 72076757 is about 8489.8031190364. The cubic root of 72076757 is about 416.1645463613.

It can be divided in two parts, 720 and 76757, that added together give a palindrome (77477).

The spelling of 72076757 in words is "seventy-two million, seventy-six thousand, seven hundred fifty-seven".