664062237 has 6 divisors (see below), whose sum is σ = 959201022. Its totient is φ = 442708152.

The previous prime is 664062221. The next prime is 664062247. The reversal of 664062237 is 732260466.

It is a happy number.

664062237 is a `hidden beast` number, since 6 + 640 + 6 + 2 + 2 + 3 + 7 = 666.

664062237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 387538596 + 276523641 = 19686^2 + 16629^2 .

It is not a de Polignac number, because 664062237 - 2⁴ = 664062221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664062247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36892338 + ... + 36892355.

It is an arithmetic number, because the mean of its divisors is an integer number (159866837).

Almost surely, 2^664062237 is an apocalyptic number.

It is an amenable number.

664062237 is a deficient number, since it is larger than the sum of its proper divisors (295138785).

664062237 is a wasteful number, since it uses less digits than its factorization.

664062237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73784699 (or 73784696 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 664062237 is about 25769.4050571603. The cubic root of 664062237 is about 872.4413906876.

The spelling of 664062237 in words is "six hundred sixty-four million, sixty-two thousand, two hundred thirty-seven".