74385733 has 2 divisors, whose sum is σ = 74385734. Its totient is φ = 74385732.

The previous prime is 74385721. The next prime is 74385737. The reversal of 74385733 is 33758347.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72216004 + 2169729 = 8498^2 + 1473^2 .

It is a cyclic number.

It is not a de Polignac number, because 74385733 - 2²¹ = 72288581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74385737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37192866 + 37192867.

It is an arithmetic number, because the mean of its divisors is an integer number (37192867).

Almost surely, 2^74385733 is an apocalyptic number.

It is an amenable number.

74385733 is a deficient number, since it is larger than the sum of its proper divisors (1).

74385733 is an equidigital number, since it uses as much as digits as its factorization.

74385733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 40.

The square root of 74385733 is about 8624.7164011346. The cubic root of 74385733 is about 420.5618576357.

The spelling of 74385733 in words is "seventy-four million, three hundred eighty-five thousand, seven hundred thirty-three".