650485081 has 4 divisors (see below), whose sum is σ = 650625700. Its totient is φ = 650344464.

The previous prime is 650485079. The next prime is 650485141. The reversal of 650485081 is 180584056.

650485081 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117614025 + 532871056 = 10845^2 + 23084^2 .

It is a cyclic number.

It is not a de Polignac number, because 650485081 - 2¹ = 650485079 is a prime.

It is a super-2 number, since 2×650485081² = 846261681207153122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 650485081.

It is not an unprimeable number, because it can be changed into a prime (650485181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63126 + ... + 72703.

It is an arithmetic number, because the mean of its divisors is an integer number (162656425).

Almost surely, 2^650485081 is an apocalyptic number.

It is an amenable number.

650485081 is a deficient number, since it is larger than the sum of its proper divisors (140619).

650485081 is a wasteful number, since it uses less digits than its factorization.

650485081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140618.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 650485081 is about 25504.6090148428. The cubic root of 650485081 is about 866.4545369547.

The spelling of 650485081 in words is "six hundred fifty million, four hundred eighty-five thousand, eighty-one".