4897621 has 4 divisors (see below), whose sum is σ = 4912492. Its totient is φ = 4882752.

The previous prime is 4897603. The next prime is 4897631. The reversal of 4897621 is 1267984.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2044900 + 2852721 = 1430^2 + 1689^2 .

It is a cyclic number.

It is not a de Polignac number, because 4897621 - 2¹⁹ = 4373333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4897601) 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, 6930 + ... + 7603.

It is an arithmetic number, because the mean of its divisors is an integer number (1228123).

Almost surely, 2^4897621 is an apocalyptic number.

It is an amenable number.

4897621 is a deficient number, since it is larger than the sum of its proper divisors (14871).

4897621 is a wasteful number, since it uses less digits than its factorization.

4897621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14870.

The product of its digits is 24192, while the sum is 37.

The square root of 4897621 is about 2213.0569355532. The cubic root of 4897621 is about 169.8224328171.

The spelling of 4897621 in words is "four million, eight hundred ninety-seven thousand, six hundred twenty-one".