6477208646 has 8 divisors (see below), whose sum is σ = 9721379640. Its totient is φ = 3236748768.

The previous prime is 6477208589. The next prime is 6477208721. The reversal of 6477208646 is 6468027746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6477208594 and 6477208603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923411 + ... + 930398.

It is an arithmetic number, because the mean of its divisors is an integer number (1215172455).

Almost surely, 2^6477208646 is an apocalyptic number.

6477208646 is a deficient number, since it is larger than the sum of its proper divisors (3244170994).

6477208646 is a wasteful number, since it uses less digits than its factorization.

6477208646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855558.

The product of its (nonzero) digits is 2709504, while the sum is 50.

The square root of 6477208646 is about 80481.1073855225. The cubic root of 6477208646 is about 1864.0717680298.

Subtracting from 6477208646 its reverse (6468027746), we obtain a square (9180900 = 3030²).

The spelling of 6477208646 in words is "six billion, four hundred seventy-seven million, two hundred eight thousand, six hundred forty-six".