664703434 has 16 divisors (see below), whose sum is σ = 1057831488. Its totient is φ = 312171712.

The previous prime is 664703407. The next prime is 664703489. The reversal of 664703434 is 434307466.

It is a junction number, because it is equal to n+sod(n) for n = 664703393 and 664703402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2332 + ... + 36535.

It is an arithmetic number, because the mean of its divisors is an integer number (66114468).

Almost surely, 2^664703434 is an apocalyptic number.

664703434 is a deficient number, since it is larger than the sum of its proper divisors (393128054).

664703434 is a wasteful number, since it uses less digits than its factorization.

664703434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39389.

The product of its (nonzero) digits is 145152, while the sum is 37.

The square root of 664703434 is about 25781.8431071171. The cubic root of 664703434 is about 872.7221007473.

The spelling of 664703434 in words is "six hundred sixty-four million, seven hundred three thousand, four hundred thirty-four".