4620921 has 8 divisors (see below), whose sum is σ = 6172320. Its totient is φ = 3075072.

The previous prime is 4620919. The next prime is 4620929. The reversal of 4620921 is 1290264.

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

It is not a de Polignac number, because 4620921 - 2¹ = 4620919 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4620891 and 4620900.

It is not an unprimeable number, because it can be changed into a prime (4620929) 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, 1306 + ... + 3308.

It is an arithmetic number, because the mean of its divisors is an integer number (771540).

Almost surely, 2^4620921 is an apocalyptic number.

It is an amenable number.

4620921 is a deficient number, since it is larger than the sum of its proper divisors (1551399).

4620921 is a wasteful number, since it uses less digits than its factorization.

4620921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 4620921 is about 2149.6327593336. The cubic root of 4620921 is about 166.5620975166.

The spelling of 4620921 in words is "four million, six hundred twenty thousand, nine hundred twenty-one".