647696033 has 4 divisors (see below), whose sum is σ = 653984448. Its totient is φ = 641407620.

The previous prime is 647696017. The next prime is 647696069. The reversal of 647696033 is 330696746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 647696033 - 2⁴ = 647696017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647696003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3144053 + ... + 3144258.

It is an arithmetic number, because the mean of its divisors is an integer number (163496112).

Almost surely, 2^647696033 is an apocalyptic number.

It is an amenable number.

647696033 is a deficient number, since it is larger than the sum of its proper divisors (6288415).

647696033 is a wasteful number, since it uses less digits than its factorization.

647696033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6288414.

The product of its (nonzero) digits is 489888, while the sum is 44.

The square root of 647696033 is about 25449.8729466377. The cubic root of 647696033 is about 865.2144135297.

The spelling of 647696033 in words is "six hundred forty-seven million, six hundred ninety-six thousand, thirty-three".