646550096597 has 4 divisors (see below), whose sum is σ = 649398335136. Its totient is φ = 643701858060.

The previous prime is 646550096579. The next prime is 646550096611. The reversal of 646550096597 is 795690055646.

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, and also an emirpimes, since its reverse is a distinct semiprime: 795690055646 = 2 ⋅397845027823.

It is a cyclic number.

It is not a de Polignac number, because 646550096597 - 2²⁴ = 646533319381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646550096527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424118929 + ... + 1424119382.

It is an arithmetic number, because the mean of its divisors is an integer number (162349583784).

Almost surely, 2^646550096597 is an apocalyptic number.

It is an amenable number.

646550096597 is a deficient number, since it is larger than the sum of its proper divisors (2848238539).

646550096597 is a wasteful number, since it uses less digits than its factorization.

646550096597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848238538.

The product of its (nonzero) digits is 61236000, while the sum is 62.

The spelling of 646550096597 in words is "six hundred forty-six billion, five hundred fifty million, ninety-six thousand, five hundred ninety-seven".