4538665 has 4 divisors (see below), whose sum is σ = 5446404. Its totient is φ = 3630928.

The previous prime is 4538657. The next prime is 4538669. The reversal of 4538665 is 5668354.

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 2920681 + 1617984 = 1709^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 4538665 - 2³ = 4538657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4538669) 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, 453862 + ... + 453871.

It is an arithmetic number, because the mean of its divisors is an integer number (1361601).

Almost surely, 2^4538665 is an apocalyptic number.

It is an amenable number.

4538665 is a deficient number, since it is larger than the sum of its proper divisors (907739).

4538665 is an equidigital number, since it uses as much as digits as its factorization.

4538665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907738.

The product of its digits is 86400, while the sum is 37.

The square root of 4538665 is about 2130.4142789608. The cubic root of 4538665 is about 165.5678628116.

It can be divided in two parts, 45386 and 65, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 4538665 in words is "four million, five hundred thirty-eight thousand, six hundred sixty-five".