4666621 has 4 divisors (see below), whose sum is σ = 4712032. Its totient is φ = 4621212.

The previous prime is 4666589. The next prime is 4666633. The reversal of 4666621 is 1266664.

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 4666621 - 2⁵ = 4666589 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4666681) 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, 22551 + ... + 22756.

It is an arithmetic number, because the mean of its divisors is an integer number (1178008).

Almost surely, 2^4666621 is an apocalyptic number.

It is an amenable number.

4666621 is a deficient number, since it is larger than the sum of its proper divisors (45411).

4666621 is a wasteful number, since it uses less digits than its factorization.

4666621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45410.

The product of its digits is 10368, while the sum is 31.

The square root of 4666621 is about 2160.2363296640. The cubic root of 4666621 is about 167.1093860670.

The spelling of 4666621 in words is "four million, six hundred sixty-six thousand, six hundred twenty-one".