6415997 has 4 divisors (see below), whose sum is σ = 7332576. Its totient is φ = 5499420.

The previous prime is 6415979. The next prime is 6415999. The reversal of 6415997 is 7995146.

6415997 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6415997 - 2¹⁰ = 6414973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6415999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458279 + ... + 458292.

It is an arithmetic number, because the mean of its divisors is an integer number (1833144).

Almost surely, 2^6415997 is an apocalyptic number.

It is an amenable number.

6415997 is a deficient number, since it is larger than the sum of its proper divisors (916579).

6415997 is an equidigital number, since it uses as much as digits as its factorization.

6415997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916578.

The product of its digits is 68040, while the sum is 41.

The square root of 6415997 is about 2532.9818396507. The cubic root of 6415997 is about 185.8181152564.

It can be divided in two parts, 64 and 15997, that added together give a palindrome (16061).

The spelling of 6415997 in words is "six million, four hundred fifteen thousand, nine hundred ninety-seven".