650399730 has 32 divisors (see below), whose sum is σ = 1575288000. Its totient is φ = 171847872.

The previous prime is 650399699. The next prime is 650399731. The reversal of 650399730 is 37993056.

It is not an unprimeable number, because it can be changed into a prime (650399731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96180 + ... + 102719.

It is an arithmetic number, because the mean of its divisors is an integer number (49227750).

Almost surely, 2^650399730 is an apocalyptic number.

650399730 is an abundant number, since it is smaller than the sum of its proper divisors (924888270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

650399730 is a wasteful number, since it uses less digits than its factorization.

650399730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199018.

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 650399730 is about 25502.9357133645. The cubic root of 650399730 is about 866.4166390854.

The spelling of 650399730 in words is "six hundred fifty million, three hundred ninety-nine thousand, seven hundred thirty".