664652433 has 16 divisors (see below), whose sum is σ = 933711680. Its totient is φ = 419390784.

The previous prime is 664652411. The next prime is 664652441. The reversal of 664652433 is 334256466.

It is not a de Polignac number, because 664652433 - 2¹⁰ = 664651409 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 664652391 and 664652400.

It is not an unprimeable number, because it can be changed into a prime (664652033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64335 + ... + 73947.

It is an arithmetic number, because the mean of its divisors is an integer number (58356980).

Almost surely, 2^664652433 is an apocalyptic number.

It is an amenable number.

664652433 is a deficient number, since it is larger than the sum of its proper divisors (269059247).

664652433 is a wasteful number, since it uses less digits than its factorization.

664652433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10848.

The product of its digits is 311040, while the sum is 39.

The square root of 664652433 is about 25780.8540005951. The cubic root of 664652433 is about 872.6997795958.

The spelling of 664652433 in words is "six hundred sixty-four million, six hundred fifty-two thousand, four hundred thirty-three".