650423056646 has 8 divisors (see below), whose sum is σ = 1064328638184. Its totient is φ = 295646843920.

The previous prime is 650423056639. The next prime is 650423056649. The reversal of 650423056646 is 646650324056.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 650423056646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650423056649) 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, 14782342175 + ... + 14782342218.

It is an arithmetic number, because the mean of its divisors is an integer number (133041079773).

Almost surely, 2^650423056646 is an apocalyptic number.

650423056646 is a deficient number, since it is larger than the sum of its proper divisors (413905581538).

650423056646 is a wasteful number, since it uses less digits than its factorization.

650423056646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29564684406.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 650423056646 in words is "six hundred fifty billion, four hundred twenty-three million, fifty-six thousand, six hundred forty-six".