650774645 has 8 divisors (see below), whose sum is σ = 807858360. Its totient is φ = 502667200.

The previous prime is 650774623. The next prime is 650774687. The reversal of 650774645 is 546477056.

It can be written as a sum of positive squares in 4 ways, for example, as 1493284 + 649281361 = 1222^2 + 25481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 650774645 - 2¹⁶ = 650709109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 650774596 and 650774605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243906 + ... + 2244195.

It is an arithmetic number, because the mean of its divisors is an integer number (100982295).

Almost surely, 2^650774645 is an apocalyptic number.

It is an amenable number.

650774645 is a deficient number, since it is larger than the sum of its proper divisors (157083715).

650774645 is a wasteful number, since it uses less digits than its factorization.

650774645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4488135.

The product of its (nonzero) digits is 705600, while the sum is 44.

The square root of 650774645 is about 25510.2850826877. The cubic root of 650774645 is about 866.5830855459.

The spelling of 650774645 in words is "six hundred fifty million, seven hundred seventy-four thousand, six hundred forty-five".