4646643 has 4 divisors (see below), whose sum is σ = 6195528. Its totient is φ = 3097760.

The previous prime is 4646633. The next prime is 4646647. The reversal of 4646643 is 3466464.

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

It is a cyclic number.

It is not a de Polignac number, because 4646643 - 2¹⁶ = 4581107 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4646647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774438 + ... + 774443.

It is an arithmetic number, because the mean of its divisors is an integer number (1548882).

Almost surely, 2^4646643 is an apocalyptic number.

4646643 is a deficient number, since it is larger than the sum of its proper divisors (1548885).

4646643 is a wasteful number, since it uses less digits than its factorization.

4646643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548884.

The product of its digits is 41472, while the sum is 33.

The square root of 4646643 is about 2155.6073390114. The cubic root of 4646643 is about 166.8705775315.

Adding to 4646643 its sum of digits (33), we get a triangular number (4646676 = T₃₀₄₈).

The spelling of 4646643 in words is "four million, six hundred forty-six thousand, six hundred forty-three".