72746533 has 2 divisors, whose sum is σ = 72746534. Its totient is φ = 72746532.

The previous prime is 72746503. The next prime is 72746537. The reversal of 72746533 is 33564727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67354849 + 5391684 = 8207^2 + 2322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72746533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72746492 and 72746501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72746537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36373266 + 36373267.

It is an arithmetic number, because the mean of its divisors is an integer number (36373267).

Almost surely, 2^72746533 is an apocalyptic number.

It is an amenable number.

72746533 is a deficient number, since it is larger than the sum of its proper divisors (1).

72746533 is an equidigital number, since it uses as much as digits as its factorization.

72746533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 37.

The square root of 72746533 is about 8529.1578130552. The cubic root of 72746533 is about 417.4496488694.

The spelling of 72746533 in words is "seventy-two million, seven hundred forty-six thousand, five hundred thirty-three".