650919126 has 64 divisors (see below), whose sum is σ = 1537595136. Its totient is φ = 181104000.

The previous prime is 650919107. The next prime is 650919127. The reversal of 650919126 is 621919056.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650919127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167101 + ... + 170951.

It is an arithmetic number, because the mean of its divisors is an integer number (24024924).

Almost surely, 2^650919126 is an apocalyptic number.

650919126 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 650919126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768797568).

650919126 is an abundant number, since it is smaller than the sum of its proper divisors (886676010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

650919126 is a wasteful number, since it uses less digits than its factorization.

650919126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 650919126 is about 25513.1167441377. The cubic root of 650919126 is about 866.6472119565.

The spelling of 650919126 in words is "six hundred fifty million, nine hundred nineteen thousand, one hundred twenty-six".