647065000 has 80 divisors (see below), whose sum is σ = 1529510400. Its totient is φ = 256536000.

The previous prime is 647064983. The next prime is 647065019. The reversal of 647065000 is 560746.

It is a super-2 number, since 2×647065000² = 837386228450000000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 647065000.

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, 634491 + ... + 635509.

It is an arithmetic number, because the mean of its divisors is an integer number (19118880).

Almost surely, 2^647065000 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 647065000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764755200).

647065000 is an abundant number, since it is smaller than the sum of its proper divisors (882445400).

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

647065000 is a wasteful number, since it uses less digits than its factorization.

647065000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 647065000 is about 25437.4723587073. The cubic root of 647065000 is about 864.9333371059.

The spelling of 647065000 in words is "six hundred forty-seven million, sixty-five thousand".