6381745 has 8 divisors (see below), whose sum is σ = 7744680. Its totient is φ = 5047680.

The previous prime is 6381737. The next prime is 6381761. The reversal of 6381745 is 5471836.

It can be written as a sum of positive squares in 4 ways, for example, as 186624 + 6195121 = 432^2 + 2489^2 .

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

It is not a de Polignac number, because 6381745 - 2³ = 6381737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6381745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6726 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (968085).

Almost surely, 2^6381745 is an apocalyptic number.

It is an amenable number.

6381745 is a deficient number, since it is larger than the sum of its proper divisors (1362935).

6381745 is a wasteful number, since it uses less digits than its factorization.

6381745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14435.

The product of its digits is 20160, while the sum is 34.

The square root of 6381745 is about 2526.2115905046. The cubic root of 6381745 is about 185.4868598157.

Subtracting from 6381745 its reverse (5471836), we obtain a palindrome (909909).

The spelling of 6381745 in words is "six million, three hundred eighty-one thousand, seven hundred forty-five".