74421827 has 2 divisors, whose sum is σ = 74421828. Its totient is φ = 74421826.

The previous prime is 74421779. The next prime is 74421829. The reversal of 74421827 is 72812447.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74421827 - 2¹² = 74417731 is a prime.

Together with 74421829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74421829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37210913 + 37210914.

It is an arithmetic number, because the mean of its divisors is an integer number (37210914).

Almost surely, 2^74421827 is an apocalyptic number.

74421827 is a deficient number, since it is larger than the sum of its proper divisors (1).

74421827 is an equidigital number, since it uses as much as digits as its factorization.

74421827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25088, while the sum is 35.

The square root of 74421827 is about 8626.8086219644. The cubic root of 74421827 is about 420.6298693566.

The spelling of 74421827 in words is "seventy-four million, four hundred twenty-one thousand, eight hundred twenty-seven".