74244641 has 2 divisors, whose sum is σ = 74244642. Its totient is φ = 74244640.

The previous prime is 74244523. The next prime is 74244689. The reversal of 74244641 is 14644247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68973025 + 5271616 = 8305^2 + 2296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74244641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74244598 and 74244607.

It is not a weakly prime, because it can be changed into another prime (74244691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37122320 + 37122321.

It is an arithmetic number, because the mean of its divisors is an integer number (37122321).

Almost surely, 2^74244641 is an apocalyptic number.

It is an amenable number.

74244641 is a deficient number, since it is larger than the sum of its proper divisors (1).

74244641 is an equidigital number, since it uses as much as digits as its factorization.

74244641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 32.

The square root of 74244641 is about 8616.5330034765. The cubic root of 74244641 is about 420.2957874838.

Adding to 74244641 its reverse (14644247), we get a palindrome (88888888).

The spelling of 74244641 in words is "seventy-four million, two hundred forty-four thousand, six hundred forty-one".