664874141 has 2 divisors, whose sum is σ = 664874142. Its totient is φ = 664874140.

The previous prime is 664874117. The next prime is 664874153. The reversal of 664874141 is 141478466.

664874141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 639331225 + 25542916 = 25285^2 + 5054^2 .

It is a cyclic number.

It is not a de Polignac number, because 664874141 - 2²⁶ = 597765277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664874341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332437070 + 332437071.

It is an arithmetic number, because the mean of its divisors is an integer number (332437071).

Almost surely, 2^664874141 is an apocalyptic number.

It is an amenable number.

664874141 is a deficient number, since it is larger than the sum of its proper divisors (1).

664874141 is an equidigital number, since it uses as much as digits as its factorization.

664874141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 664874141 is about 25785.1534996401. The cubic root of 664874141 is about 872.7968042478.

The spelling of 664874141 in words is "six hundred sixty-four million, eight hundred seventy-four thousand, one hundred forty-one".