650668837 has 8 divisors (see below), whose sum is σ = 800823296. Its totient is φ = 514814832.

The previous prime is 650668817. The next prime is 650668841. The reversal of 650668837 is 738866056.

It is a happy number.

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

It is not a de Polignac number, because 650668837 - 2⁷ = 650668709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650668807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3575013 + ... + 3575194.

It is an arithmetic number, because the mean of its divisors is an integer number (100102912).

Almost surely, 2^650668837 is an apocalyptic number.

It is an amenable number.

650668837 is a deficient number, since it is larger than the sum of its proper divisors (150154459).

650668837 is a wasteful number, since it uses less digits than its factorization.

650668837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150227.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 650668837 is about 25508.2111681709. The cubic root of 650668837 is about 866.5361177291.

The spelling of 650668837 in words is "six hundred fifty million, six hundred sixty-eight thousand, eight hundred thirty-seven".