4145864 has 8 divisors (see below), whose sum is σ = 7773510. Its totient is φ = 2072928.

The previous prime is 4145863. The next prime is 4145873. The reversal of 4145864 is 4685414.

4145864 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 24964 = 2030^2 + 158^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4145864.

It is not an unprimeable number, because it can be changed into a prime (4145861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259109 + ... + 259124.

Almost surely, 2^4145864 is an apocalyptic number.

It is an amenable number.

4145864 is a deficient number, since it is larger than the sum of its proper divisors (3627646).

4145864 is a wasteful number, since it uses less digits than its factorization.

4145864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518239 (or 518235 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 4145864 is about 2036.1394844165. The cubic root of 4145864 is about 160.6466538053.

The spelling of 4145864 in words is "four million, one hundred forty-five thousand, eight hundred sixty-four".