650438901 has 12 divisors (see below), whose sum is σ = 1073740512. Its totient is φ = 371679336.

The previous prime is 650438897. The next prime is 650438917. The reversal of 650438901 is 109834056.

It is not a de Polignac number, because 650438901 - 2² = 650438897 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650438981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5162151 + ... + 5162276.

It is an arithmetic number, because the mean of its divisors is an integer number (89478376).

Almost surely, 2^650438901 is an apocalyptic number.

It is an amenable number.

650438901 is a deficient number, since it is larger than the sum of its proper divisors (423301611).

650438901 is a wasteful number, since it uses less digits than its factorization.

650438901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324440 (or 10324437 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 650438901 is about 25503.7036722120. The cubic root of 650438901 is about 866.4340323505.

The spelling of 650438901 in words is "six hundred fifty million, four hundred thirty-eight thousand, nine hundred one".