650287669 has 4 divisors (see below), whose sum is σ = 652217644. Its totient is φ = 648357696.

The previous prime is 650287663. The next prime is 650287679. The reversal of 650287669 is 966782056.

It is a happy number.

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 85655025 + 564632644 = 9255^2 + 23762^2 .

It is a cyclic number.

It is not a de Polignac number, because 650287669 - 2³ = 650287661 is a prime.

It is a super-2 number, since 2×650287669² = 845748104906907122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650287661) 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, 964482 + ... + 965155.

It is an arithmetic number, because the mean of its divisors is an integer number (163054411).

Almost surely, 2^650287669 is an apocalyptic number.

It is an amenable number.

650287669 is a deficient number, since it is larger than the sum of its proper divisors (1929975).

650287669 is a wasteful number, since it uses less digits than its factorization.

650287669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929974.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 650287669 is about 25500.7385971466. The cubic root of 650287669 is about 866.3668763076.

The spelling of 650287669 in words is "six hundred fifty million, two hundred eighty-seven thousand, six hundred sixty-nine".