4345664 has 14 divisors (see below), whose sum is σ = 8623554. Its totient is φ = 2172800.

The previous prime is 4345651. The next prime is 4345669. The reversal of 4345664 is 4665434.

It can be written as a sum of positive squares in only one way, i.e., 4032064 + 313600 = 2008^2 + 560^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 4345664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4345669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33887 + ... + 34014.

Almost surely, 2^4345664 is an apocalyptic number.

It is an amenable number.

4345664 is a deficient number, since it is larger than the sum of its proper divisors (4277890).

4345664 is an equidigital number, since it uses as much as digits as its factorization.

4345664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67913 (or 67903 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 4345664 is about 2084.6256258619. The cubic root of 4345664 is about 163.1869334662.

The spelling of 4345664 in words is "four million, three hundred forty-five thousand, six hundred sixty-four".