4642649 has 24 divisors (see below), whose sum is σ = 5640264. Its totient is φ = 3801600.

The previous prime is 4642643. The next prime is 4642657. The reversal of 4642649 is 9462464.

4642649 = T₆₂ + T₆₃ + ... + T₃₀₃.

It can be written as a sum of positive squares in 4 ways, for example, as 937024 + 3705625 = 968^2 + 1925^2 .

It is not a de Polignac number, because 4642649 - 2¹² = 4638553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4642643) 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 23 ways as a sum of consecutive naturals, for example, 76079 + ... + 76139.

It is an arithmetic number, because the mean of its divisors is an integer number (235011).

Almost surely, 2^4642649 is an apocalyptic number.

It is an amenable number.

4642649 is a deficient number, since it is larger than the sum of its proper divisors (997615).

4642649 is a wasteful number, since it uses less digits than its factorization.

4642649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 126 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 4642649 is about 2154.6807188073. The cubic root of 4642649 is about 166.8227528880.

It can be divided in two parts, 464 and 2649, that added together give a palindrome (3113).

The spelling of 4642649 in words is "four million, six hundred forty-two thousand, six hundred forty-nine".