4630644 has 18 divisors (see below), whose sum is σ = 11705330. Its totient is φ = 1543536.

The previous prime is 4630643. The next prime is 4630651. The reversal of 4630644 is 4460364.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4284900 + 345744 = 2070^2 + 588^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4630643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64279 + ... + 64350.

Almost surely, 2^4630644 is an apocalyptic number.

It is an amenable number.

4630644 is an abundant number, since it is smaller than the sum of its proper divisors (7074686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4630644 is a wasteful number, since it uses less digits than its factorization.

4630644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128639 (or 128634 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 4630644 is about 2151.8931200225. The cubic root of 4630644 is about 166.6788382222.

The spelling of 4630644 in words is "four million, six hundred thirty thousand, six hundred forty-four".