4578641 has 4 divisors (see below), whose sum is σ = 4604400. Its totient is φ = 4552884.

The previous prime is 4578631. The next prime is 4578643. The reversal of 4578641 is 1468754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4578641 - 2¹⁸ = 4316497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4578643) 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, 12611 + ... + 12968.

It is an arithmetic number, because the mean of its divisors is an integer number (1151100).

Almost surely, 2^4578641 is an apocalyptic number.

It is an amenable number.

4578641 is a deficient number, since it is larger than the sum of its proper divisors (25759).

4578641 is a wasteful number, since it uses less digits than its factorization.

4578641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25758.

The product of its digits is 26880, while the sum is 35.

The square root of 4578641 is about 2139.7759228480. The cubic root of 4578641 is about 166.0525430033.

The spelling of 4578641 in words is "four million, five hundred seventy-eight thousand, six hundred forty-one".