4644657 has 12 divisors (see below), whose sum is σ = 6823440. Its totient is φ = 3043608.

The previous prime is 4644631. The next prime is 4644667. The reversal of 4644657 is 7564464.

4644657 is a `hidden beast` number, since 4 + 644 + 6 + 5 + 7 = 666.

It is not a de Polignac number, because 4644657 - 2⁶ = 4644593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4644617) 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 11 ways as a sum of consecutive naturals, for example, 3843 + ... + 4904.

It is an arithmetic number, because the mean of its divisors is an integer number (568620).

Almost surely, 2^4644657 is an apocalyptic number.

It is an amenable number.

4644657 is a deficient number, since it is larger than the sum of its proper divisors (2178783).

4644657 is a wasteful number, since it uses less digits than its factorization.

4644657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8812 (or 8809 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 4644657 is about 2155.1466307423. The cubic root of 4644657 is about 166.8468003521.

The spelling of 4644657 in words is "four million, six hundred forty-four thousand, six hundred fifty-seven".