6381045 has 32 divisors (see below), whose sum is σ = 12378240. Its totient is φ = 3093120.

The previous prime is 6381031. The next prime is 6381047. The reversal of 6381045 is 5401836.

It is not a de Polignac number, because 6381045 - 2¹⁷ = 6249973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664 + ... + 3633.

It is an arithmetic number, because the mean of its divisors is an integer number (386820).

Almost surely, 2^6381045 is an apocalyptic number.

It is an amenable number.

6381045 is a deficient number, since it is larger than the sum of its proper divisors (5997195).

6381045 is a wasteful number, since it uses less digits than its factorization.

6381045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322 (or 4316 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 6381045 is about 2526.0730393241. The cubic root of 6381045 is about 185.4800776816.

The spelling of 6381045 in words is "six million, three hundred eighty-one thousand, forty-five".