4649621 has 2 divisors, whose sum is σ = 4649622. Its totient is φ = 4649620.

The previous prime is 4649609. The next prime is 4649629. The reversal of 4649621 is 1269464.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4468996 + 180625 = 2114^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 4649621 - 2¹⁸ = 4387477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4649629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2324810 + 2324811.

It is an arithmetic number, because the mean of its divisors is an integer number (2324811).

Almost surely, 2^4649621 is an apocalyptic number.

It is an amenable number.

4649621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4649621 is an equidigital number, since it uses as much as digits as its factorization.

4649621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 4649621 is about 2156.2979849733. The cubic root of 4649621 is about 166.9062186353.

The spelling of 4649621 in words is "four million, six hundred forty-nine thousand, six hundred twenty-one".