4656621 has 4 divisors (see below), whose sum is σ = 6208832. Its totient is φ = 3104412.

The previous prime is 4656607. The next prime is 4656629. The reversal of 4656621 is 1266564.

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 not a de Polignac number, because 4656621 - 2¹⁰ = 4655597 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4656629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776101 + ... + 776106.

It is an arithmetic number, because the mean of its divisors is an integer number (1552208).

Almost surely, 2^4656621 is an apocalyptic number.

It is an amenable number.

4656621 is a deficient number, since it is larger than the sum of its proper divisors (1552211).

4656621 is a wasteful number, since it uses less digits than its factorization.

4656621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552210.

The product of its digits is 8640, while the sum is 30.

The square root of 4656621 is about 2157.9205268035. The cubic root of 4656621 is about 166.9899356886.

The spelling of 4656621 in words is "four million, six hundred fifty-six thousand, six hundred twenty-one".