74471689 has 2 divisors, whose sum is σ = 74471690. Its totient is φ = 74471688.

The previous prime is 74471647. The next prime is 74471701. The reversal of 74471689 is 98617447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65739664 + 8732025 = 8108^2 + 2955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74471689 is a prime.

It is not a weakly prime, because it can be changed into another prime (74471609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37235844 + 37235845.

It is an arithmetic number, because the mean of its divisors is an integer number (37235845).

Almost surely, 2^74471689 is an apocalyptic number.

It is an amenable number.

74471689 is a deficient number, since it is larger than the sum of its proper divisors (1).

74471689 is an equidigital number, since it uses as much as digits as its factorization.

74471689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 74471689 is about 8629.6980827837. The cubic root of 74471689 is about 420.7237878799.

The spelling of 74471689 in words is "seventy-four million, four hundred seventy-one thousand, six hundred eighty-nine".