72970741 has 2 divisors, whose sum is σ = 72970742. Its totient is φ = 72970740.

The previous prime is 72970717. The next prime is 72970753. The reversal of 72970741 is 14707927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71470116 + 1500625 = 8454^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 72970741 - 2⁹ = 72970229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72970741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72970841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36485370 + 36485371.

It is an arithmetic number, because the mean of its divisors is an integer number (36485371).

Almost surely, 2^72970741 is an apocalyptic number.

It is an amenable number.

72970741 is a deficient number, since it is larger than the sum of its proper divisors (1).

72970741 is an equidigital number, since it uses as much as digits as its factorization.

72970741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 72970741 is about 8542.2913202489. The cubic root of 72970741 is about 417.8780750598.

The spelling of 72970741 in words is "seventy-two million, nine hundred seventy thousand, seven hundred forty-one".