646070224 has 40 divisors (see below), whose sum is σ = 1332504000. Its totient is φ = 302582016.

The previous prime is 646070219. The next prime is 646070231. The reversal of 646070224 is 422070646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15117 + ... + 38995.

It is an arithmetic number, because the mean of its divisors is an integer number (33312600).

Almost surely, 2^646070224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646070224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666252000).

646070224 is an abundant number, since it is smaller than the sum of its proper divisors (686433776).

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

646070224 is a wasteful number, since it uses less digits than its factorization.

646070224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23995 (or 23989 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 646070224 is about 25417.9114798994. The cubic root of 646070224 is about 864.4898699495.

The spelling of 646070224 in words is "six hundred forty-six million, seventy thousand, two hundred twenty-four".