647080746 has 16 divisors (see below), whose sum is σ = 1393712544. Its totient is φ = 199101744.

The previous prime is 647080717. The next prime is 647080747.

647080746 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 647080698 and 647080707.

It is not an unprimeable number, because it can be changed into a prime (647080747) 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, 4147876 + ... + 4148031.

It is an arithmetic number, because the mean of its divisors is an integer number (87107034).

Almost surely, 2^647080746 is an apocalyptic number.

647080746 is an abundant number, since it is smaller than the sum of its proper divisors (746631798).

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

647080746 is a wasteful number, since it uses less digits than its factorization.

647080746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8295925.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 647080746 is about 25437.7818608463. The cubic root of 647080746 is about 864.9403529543.

The spelling of 647080746 in words is "six hundred forty-seven million, eighty thousand, seven hundred forty-six".