74317643 has 2 divisors, whose sum is σ = 74317644. Its totient is φ = 74317642.

The previous prime is 74317637. The next prime is 74317651. The reversal of 74317643 is 34671347.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74317643 - 2¹⁴ = 74301259 is a prime.

It is a super-2 number, since 2×74317643² = 11046224122150898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74317603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37158821 + 37158822.

It is an arithmetic number, because the mean of its divisors is an integer number (37158822).

Almost surely, 2^74317643 is an apocalyptic number.

74317643 is a deficient number, since it is larger than the sum of its proper divisors (1).

74317643 is an equidigital number, since it uses as much as digits as its factorization.

74317643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 35.

The square root of 74317643 is about 8620.7681212291. The cubic root of 74317643 is about 420.4334961088.

The spelling of 74317643 in words is "seventy-four million, three hundred seventeen thousand, six hundred forty-three".