646700112 has 100 divisors (see below), whose sum is σ = 1970325280. Its totient is φ = 204213312.

The previous prime is 646700059. The next prime is 646700137. The reversal of 646700112 is 211007646.

646700112 is a `hidden beast` number, since 646 + 7 + 0 + 0 + 1 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11493 + ... + 37755.

Almost surely, 2^646700112 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 646700112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985162640).

646700112 is an abundant number, since it is smaller than the sum of its proper divisors (1323625168).

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

646700112 is a wasteful number, since it uses less digits than its factorization.

646700112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26302 (or 26287 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 646700112 is about 25430.2990937975. The cubic root of 646700112 is about 864.7707243141.

Adding to 646700112 its reverse (211007646), we get a palindrome (857707758).

The spelling of 646700112 in words is "six hundred forty-six million, seven hundred thousand, one hundred twelve".