4126645 has 4 divisors (see below), whose sum is σ = 4951980. Its totient is φ = 3301312.

The previous prime is 4126621. The next prime is 4126651. The reversal of 4126645 is 5466214.

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 908209 + 3218436 = 953^2 + 1794^2 .

It is a cyclic number.

It is not a de Polignac number, because 4126645 - 2¹¹ = 4124597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412660 + ... + 412669.

It is an arithmetic number, because the mean of its divisors is an integer number (1237995).

Almost surely, 2^4126645 is an apocalyptic number.

It is an amenable number.

4126645 is a deficient number, since it is larger than the sum of its proper divisors (825335).

4126645 is an equidigital number, since it uses as much as digits as its factorization.

4126645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825334.

The product of its digits is 5760, while the sum is 28.

The square root of 4126645 is about 2031.4145317980. The cubic root of 4126645 is about 160.3980324301.

The spelling of 4126645 in words is "four million, one hundred twenty-six thousand, six hundred forty-five".