74279641 has 2 divisors, whose sum is σ = 74279642. Its totient is φ = 74279640.

The previous prime is 74279573. The next prime is 74279657. The reversal of 74279641 is 14697247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41332041 + 32947600 = 6429^2 + 5740^2 .

It is an emirp because it is prime and its reverse (14697247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74279641 - 2²¹ = 72182489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74279594 and 74279603.

It is not a weakly prime, because it can be changed into another prime (74279041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37139820 + 37139821.

It is an arithmetic number, because the mean of its divisors is an integer number (37139821).

Almost surely, 2^74279641 is an apocalyptic number.

It is an amenable number.

74279641 is a deficient number, since it is larger than the sum of its proper divisors (1).

74279641 is an equidigital number, since it uses as much as digits as its factorization.

74279641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 74279641 is about 8618.5637434552. The cubic root of 74279641 is about 420.3618216173.

The spelling of 74279641 in words is "seventy-four million, two hundred seventy-nine thousand, six hundred forty-one".