6397655 has 16 divisors (see below), whose sum is σ = 8424864. Its totient is φ = 4625280.

The previous prime is 6397649. The next prime is 6397667. The reversal of 6397655 is 5567936.

It is not a de Polignac number, because 6397655 - 2⁶ = 6397591 is a prime.

It is a Duffinian number.

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, 15917 + ... + 16313.

It is an arithmetic number, because the mean of its divisors is an integer number (526554).

Almost surely, 2^6397655 is an apocalyptic number.

6397655 is a deficient number, since it is larger than the sum of its proper divisors (2027209).

6397655 is a wasteful number, since it uses less digits than its factorization.

6397655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706.

The product of its digits is 170100, while the sum is 41.

The square root of 6397655 is about 2529.3586143527. The cubic root of 6397655 is about 185.6408744789.

The spelling of 6397655 in words is "six million, three hundred ninety-seven thousand, six hundred fifty-five".