74943653 has 2 divisors, whose sum is σ = 74943654. Its totient is φ = 74943652.

The previous prime is 74943641. The next prime is 74943677. The reversal of 74943653 is 35634947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74943649 + 4 = 8657^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 74943653 - 2¹⁴ = 74927269 is a prime.

It is a super-2 number, since 2×74943653² = 11233102249968818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74943653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74943623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37471826 + 37471827.

It is an arithmetic number, because the mean of its divisors is an integer number (37471827).

Almost surely, 2^74943653 is an apocalyptic number.

It is an amenable number.

74943653 is a deficient number, since it is larger than the sum of its proper divisors (1).

74943653 is an equidigital number, since it uses as much as digits as its factorization.

74943653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 74943653 is about 8657.0002310269. Note that the first 3 decimals coincide. The cubic root of 74943653 is about 421.6106953018.

The spelling of 74943653 in words is "seventy-four million, nine hundred forty-three thousand, six hundred fifty-three".