4010645 has 4 divisors (see below), whose sum is σ = 4812780. Its totient is φ = 3208512.

The previous prime is 4010641. The next prime is 4010647. The reversal of 4010645 is 5460104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2390116 + 1620529 = 1546^2 + 1273^2 .

It is a cyclic number.

It is not a de Polignac number, because 4010645 - 2² = 4010641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4010641) 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, 401060 + ... + 401069.

It is an arithmetic number, because the mean of its divisors is an integer number (1203195).

Almost surely, 2^4010645 is an apocalyptic number.

It is an amenable number.

4010645 is a deficient number, since it is larger than the sum of its proper divisors (802135).

4010645 is an equidigital number, since it uses as much as digits as its factorization.

4010645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802134.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4010645 is about 2002.6594817892. The cubic root of 4010645 is about 158.8807961676.

Adding to 4010645 its reverse (5460104), we get a palindrome (9470749).

The spelling of 4010645 in words is "four million, ten thousand, six hundred forty-five".