74169643 has 2 divisors, whose sum is σ = 74169644. Its totient is φ = 74169642.

The previous prime is 74169629. The next prime is 74169647. The reversal of 74169643 is 34696147.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74169643 - 2⁵ = 74169611 is a prime.

It is a super-2 number, since 2×74169643² = 11002271885494898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74169596 and 74169605.

It is not a weakly prime, because it can be changed into another prime (74169647) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37084821 + 37084822.

It is an arithmetic number, because the mean of its divisors is an integer number (37084822).

Almost surely, 2^74169643 is an apocalyptic number.

74169643 is a deficient number, since it is larger than the sum of its proper divisors (1).

74169643 is an equidigital number, since it uses as much as digits as its factorization.

74169643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 74169643 is about 8612.1799214833. The cubic root of 74169643 is about 420.1542196313.

The spelling of 74169643 in words is "seventy-four million, one hundred sixty-nine thousand, six hundred forty-three".