4620639 has 8 divisors (see below), whose sum is σ = 6202800. Its totient is φ = 3059456.

The previous prime is 4620611. The next prime is 4620673. The reversal of 4620639 is 9360264.

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 4620639 - 2⁹ = 4620127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4620139) 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 in 7 ways as a sum of consecutive naturals, for example, 4722 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (775350).

Almost surely, 2^4620639 is an apocalyptic number.

4620639 is a deficient number, since it is larger than the sum of its proper divisors (1582161).

4620639 is a wasteful number, since it uses less digits than its factorization.

4620639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10489.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 4620639 is about 2149.5671657336. The cubic root of 4620639 is about 166.5587091973.

The spelling of 4620639 in words is "four million, six hundred twenty thousand, six hundred thirty-nine".