72705383 has 2 divisors, whose sum is σ = 72705384. Its totient is φ = 72705382.

The previous prime is 72705377. The next prime is 72705397. The reversal of 72705383 is 38350727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72705383 - 2⁶ = 72705319 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72701383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36352691 + 36352692.

It is an arithmetic number, because the mean of its divisors is an integer number (36352692).

Almost surely, 2^72705383 is an apocalyptic number.

72705383 is a deficient number, since it is larger than the sum of its proper divisors (1).

72705383 is an equidigital number, since it uses as much as digits as its factorization.

72705383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 72705383 is about 8526.7451586171. The cubic root of 72705383 is about 417.3709221253.

The spelling of 72705383 in words is "seventy-two million, seven hundred five thousand, three hundred eighty-three".