4657639 has 8 divisors (see below), whose sum is σ = 5403008. Its totient is φ = 3932280.

The previous prime is 4657621. The next prime is 4657687. The reversal of 4657639 is 9367564.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4657639 - 2⁵ = 4657607 is a prime.

It is a Duffinian number.

4657639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4657039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4497 + ... + 5434.

It is an arithmetic number, because the mean of its divisors is an integer number (675376).

Almost surely, 2^4657639 is an apocalyptic number.

4657639 is a deficient number, since it is larger than the sum of its proper divisors (745369).

4657639 is an equidigital number, since it uses as much as digits as its factorization.

4657639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005.

The product of its digits is 136080, while the sum is 40.

The square root of 4657639 is about 2158.1563891433. The cubic root of 4657639 is about 167.0021035508.

The spelling of 4657639 in words is "four million, six hundred fifty-seven thousand, six hundred thirty-nine".