647487426 has 32 divisors (see below), whose sum is σ = 1303864128. Its totient is φ = 214353920.

The previous prime is 647487419. The next prime is 647487427. The reversal of 647487426 is 624784746.

It is not an unprimeable number, because it can be changed into a prime (647487427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 734506 + ... + 735386.

It is an arithmetic number, because the mean of its divisors is an integer number (40745754).

Almost surely, 2^647487426 is an apocalyptic number.

647487426 is an abundant number, since it is smaller than the sum of its proper divisors (656376702).

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

647487426 is a wasteful number, since it uses less digits than its factorization.

647487426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its digits is 1806336, while the sum is 48.

The square root of 647487426 is about 25445.7742267749. The cubic root of 647487426 is about 865.1215154445.

The spelling of 647487426 in words is "six hundred forty-seven million, four hundred eighty-seven thousand, four hundred twenty-six".