650012729 has 16 divisors (see below), whose sum is σ = 698544000. Its totient is φ = 603335040.

The previous prime is 650012687. The next prime is 650012747. The reversal of 650012729 is 927210056.

It is a cyclic number.

It is not a de Polignac number, because 650012729 - 2²⁰ = 648964153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 650012695 and 650012704.

It is not an unprimeable number, because it can be changed into a prime (650012329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184022 + ... + 187520.

It is an arithmetic number, because the mean of its divisors is an integer number (43659000).

Almost surely, 2^650012729 is an apocalyptic number.

It is an amenable number.

650012729 is a deficient number, since it is larger than the sum of its proper divisors (48531271).

650012729 is a wasteful number, since it uses less digits than its factorization.

650012729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 650012729 is about 25495.3472029702. The cubic root of 650012729 is about 866.2447598463.

The spelling of 650012729 in words is "six hundred fifty million, twelve thousand, seven hundred twenty-nine".