4080645 has 32 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 2151360.

The previous prime is 4080613. The next prime is 4080647. The reversal of 4080645 is 5460804.

It is not a de Polignac number, because 4080645 - 2⁵ = 4080613 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4080647) 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, 22455 + ... + 22635.

It is an arithmetic number, because the mean of its divisors is an integer number (229320).

Almost surely, 2^4080645 is an apocalyptic number.

4080645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4080645 is a deficient number, since it is larger than the sum of its proper divisors (3257595).

4080645 is a wasteful number, since it uses less digits than its factorization.

4080645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4080645 is about 2020.0606426541. The cubic root of 4080645 is about 159.7998147453.

The spelling of 4080645 in words is "four million, eighty thousand, six hundred forty-five".