650687 has 4 divisors (see below), whose sum is σ = 661416. Its totient is φ = 639960.

The previous prime is 650669. The next prime is 650701. The reversal of 650687 is 786056.

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

It is a cyclic number.

It is not a de Polignac number, because 650687 - 2⁶ = 650623 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 650687.

It is not an unprimeable number, because it can be changed into a prime (650627) 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, 5273 + ... + 5394.

It is an arithmetic number, because the mean of its divisors is an integer number (165354).

2⁶⁵⁰⁶⁸⁷ is an apocalyptic number.

650687 is a deficient number, since it is larger than the sum of its proper divisors (10729).

650687 is a wasteful number, since it uses less digits than its factorization.

650687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10728.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 650687 is about 806.6517216246. The cubic root of 650687 is about 86.6544180586.

The spelling of 650687 in words is "six hundred fifty thousand, six hundred eighty-seven".