700000000644 has 96 divisors (see below), whose sum is σ = 1886429051136. Its totient is φ = 197883740160.

The previous prime is 700000000607. The next prime is 700000000751. The reversal of 700000000644 is 446000000007.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 700000000644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36599404 + ... + 36618524.

It is an arithmetic number, because the mean of its divisors is an integer number (19650302616).

Almost surely, 2^700000000644 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 700000000644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943214525568).

700000000644 is an abundant number, since it is smaller than the sum of its proper divisors (1186429050492).

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

700000000644 is a wasteful number, since it uses less digits than its factorization.

700000000644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23725 (or 23723 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The spelling of 700000000644 in words is "seven hundred billion, six hundred forty-four", and thus it is an aban number.