646023032 has 16 divisors (see below), whose sum is σ = 1213787760. Its totient is φ = 322346304.

The previous prime is 646023031. The next prime is 646023067. The reversal of 646023032 is 230320646.

It is a junction number, because it is equal to n+sod(n) for n = 646022992 and 646023010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646023031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79013 + ... + 86804.

It is an arithmetic number, because the mean of its divisors is an integer number (75861735).

Almost surely, 2^646023032 is an apocalyptic number.

It is an amenable number.

646023032 is a deficient number, since it is larger than the sum of its proper divisors (567764728).

646023032 is a wasteful number, since it uses less digits than its factorization.

646023032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166310 (or 166306 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 646023032 is about 25416.9831411991. The cubic root of 646023032 is about 864.4688206385.

Adding to 646023032 its reverse (230320646), we get a palindrome (876343678).

It can be divided in two parts, 6460 and 23032, that added together give a palindrome (29492).

The spelling of 646023032 in words is "six hundred forty-six million, twenty-three thousand, thirty-two".