646002422 has 8 divisors (see below), whose sum is σ = 1043542416. Its totient is φ = 298154952.

The previous prime is 646002419. The next prime is 646002433. The reversal of 646002422 is 224200646.

646002422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 24846247 = 646002422 / (6 + 4 + 6 + 0 + 0 + 2 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 646002391 and 646002400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12423098 + ... + 12423149.

It is an arithmetic number, because the mean of its divisors is an integer number (130442802).

Almost surely, 2^646002422 is an apocalyptic number.

646002422 is a deficient number, since it is larger than the sum of its proper divisors (397539994).

646002422 is a wasteful number, since it uses less digits than its factorization.

646002422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24846262.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 646002422 is about 25416.5777003907. The cubic root of 646002422 is about 864.4596275236.

The spelling of 646002422 in words is "six hundred forty-six million, two thousand, four hundred twenty-two".