647431334 has 16 divisors (see below), whose sum is σ = 1059912000. Its totient is φ = 294153960.

The previous prime is 647431313. The next prime is 647431361. The reversal of 647431334 is 433134746.

It is a junction number, because it is equal to n+sod(n) for n = 647431294 and 647431303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56417 + ... + 66915.

It is an arithmetic number, because the mean of its divisors is an integer number (66244500).

Almost surely, 2^647431334 is an apocalyptic number.

647431334 is a deficient number, since it is larger than the sum of its proper divisors (412480666).

647431334 is a wasteful number, since it uses less digits than its factorization.

647431334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315.

The product of its digits is 72576, while the sum is 35.

The square root of 647431334 is about 25444.6720159644. The cubic root of 647431334 is about 865.0965328243.

The spelling of 647431334 in words is "six hundred forty-seven million, four hundred thirty-one thousand, three hundred thirty-four".