647116000 has 48 divisors (see below), whose sum is σ = 1589973840. Its totient is φ = 258844800.

The previous prime is 647115983. The next prime is 647116009. The reversal of 647116000 is 611746.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647116009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76890 + ... + 84889.

It is an arithmetic number, because the mean of its divisors is an integer number (33124455).

Almost surely, 2^647116000 is an apocalyptic number.

It is an amenable number.

647116000 is an abundant number, since it is smaller than the sum of its proper divisors (942857840).

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

647116000 is a wasteful number, since it uses less digits than its factorization.

647116000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161804 (or 161786 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 647116000 is about 25438.4747970471. The cubic root of 647116000 is about 864.9560604497.

Adding to 647116000 its reverse (611746), we get a palindrome (647727746).

The spelling of 647116000 in words is "six hundred forty-seven million, one hundred sixteen thousand".