74423617 has 2 divisors, whose sum is σ = 74423618. Its totient is φ = 74423616.

The previous prime is 74423611. The next prime is 74423621. The reversal of 74423617 is 71632447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61528336 + 12895281 = 7844^2 + 3591^2 .

It is a cyclic number.

It is not a de Polignac number, because 74423617 - 2²³ = 66035009 is a prime.

It is not a weakly prime, because it can be changed into another prime (74423611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37211808 + 37211809.

It is an arithmetic number, because the mean of its divisors is an integer number (37211809).

Almost surely, 2^74423617 is an apocalyptic number.

It is an amenable number.

74423617 is a deficient number, since it is larger than the sum of its proper divisors (1).

74423617 is an equidigital number, since it uses as much as digits as its factorization.

74423617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The square root of 74423617 is about 8626.9123677014. The cubic root of 74423617 is about 420.6332416711.

The spelling of 74423617 in words is "seventy-four million, four hundred twenty-three thousand, six hundred seventeen".