664004834 has 4 divisors (see below), whose sum is σ = 996007254. Its totient is φ = 332002416.

The previous prime is 664004827. The next prime is 664004899. The reversal of 664004834 is 438400466.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 369985225 + 294019609 = 19235^2 + 17147^2 .

It is a junction number, because it is equal to n+sod(n) for n = 664004794 and 664004803.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166001207 + ... + 166001210.

Almost surely, 2^664004834 is an apocalyptic number.

664004834 is a deficient number, since it is larger than the sum of its proper divisors (332002420).

664004834 is a wasteful number, since it uses less digits than its factorization.

664004834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332002419.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 664004834 is about 25768.2912510706. The cubic root of 664004834 is about 872.4162513792.

The spelling of 664004834 in words is "six hundred sixty-four million, four thousand, eight hundred thirty-four".