647340494 has 32 divisors (see below), whose sum is σ = 1040238720. Its totient is φ = 301577472.

The previous prime is 647340439. The next prime is 647340517. The reversal of 647340494 is 494043746.

It is a happy number.

647340494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197372 + ... + 200624.

It is an arithmetic number, because the mean of its divisors is an integer number (32507460).

Almost surely, 2^647340494 is an apocalyptic number.

647340494 is a deficient number, since it is larger than the sum of its proper divisors (392898226).

647340494 is a wasteful number, since it uses less digits than its factorization.

647340494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404.

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 647340494 is about 25442.8869038087. The cubic root of 647340494 is about 865.0560708527.

The spelling of 647340494 in words is "six hundred forty-seven million, three hundred forty thousand, four hundred ninety-four".