650199001 has 9 divisors (see below), whose sum is σ = 666795999. Its totient is φ = 634007136.

The previous prime is 650198977. The next prime is 650199007. The reversal of 650199001 is 100991056.

The square root of 650199001 is 25499.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 399800025 + 250398976 = 19995^2 + 15824^2 .

It is not a de Polignac number, because 650199001 - 2⁷ = 650198873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650199007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1096161 + ... + 1096753.

Almost surely, 2^650199001 is an apocalyptic number.

650199001 is the 25499-th square number.

650199001 is the 12750-th centered octagonal number.

It is an amenable number.

650199001 is a deficient number, since it is larger than the sum of its proper divisors (16596998).

650199001 is an frugal number, since it uses more digits than its factorization.

650199001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 31.

The cubic root of 650199001 is about 866.3274975764.

The spelling of 650199001 in words is "six hundred fifty million, one hundred ninety-nine thousand, one".