650097009 has 15 divisors (see below), whose sum is σ = 971475483. Its totient is φ = 433245024.

The previous prime is 650096977. The next prime is 650097013. The reversal of 650097009 is 900790056.

The square root of 650097009 is 25497.

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., 255200625 + 394896384 = 15975^2 + 19872^2 .

It is not a de Polignac number, because 650097009 - 2⁵ = 650096977 is a prime.

It is a super-2 number, since 2×650097009² = 845252242221492162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (650097059) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 228057 + ... + 230889.

Almost surely, 2^650097009 is an apocalyptic number.

650097009 is the 25497-th square number.

650097009 is the 12749-th centered octagonal number.

It is an amenable number.

650097009 is a deficient number, since it is larger than the sum of its proper divisors (321378474).

650097009 is an frugal number, since it uses more digits than its factorization.

650097009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The cubic root of 650097009 is about 866.2821970379.

Multiplying 650097009 by its sum of digits (36), we get a square (23403492324 = 152982²).

The spelling of 650097009 in words is "six hundred fifty million, ninety-seven thousand, nine".