4616821 has 4 divisors (see below), whose sum is σ = 5036544. Its totient is φ = 4197100.

The previous prime is 4616819. The next prime is 4616827. The reversal of 4616821 is 1286164.

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 4616821 - 2¹ = 4616819 is a prime.

It is a super-2 number, since 2×4616821² = 42630072292082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4616821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4616827) 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, 209845 + ... + 209866.

It is an arithmetic number, because the mean of its divisors is an integer number (1259136).

Almost surely, 2^4616821 is an apocalyptic number.

It is an amenable number.

4616821 is a deficient number, since it is larger than the sum of its proper divisors (419723).

4616821 is a wasteful number, since it uses less digits than its factorization.

4616821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419722.

The product of its digits is 2304, while the sum is 28.

The square root of 4616821 is about 2148.6788964385. The cubic root of 4616821 is about 166.5128211441.

It can be divided in two parts, 46168 and 21, that multiplied together give a triangular number (969528 = T₁₃₉₂).

The spelling of 4616821 in words is "four million, six hundred sixteen thousand, eight hundred twenty-one".