4638723 has 4 divisors (see below), whose sum is σ = 6184968. Its totient is φ = 3092480.

The previous prime is 4638721. The next prime is 4638737. The reversal of 4638723 is 3278364.

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 4638723 - 2¹ = 4638721 is a prime.

It is a super-4 number, since 4×4638723⁴ (a number of 28 digits) contains 4444 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4638721) 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, 773118 + ... + 773123.

It is an arithmetic number, because the mean of its divisors is an integer number (1546242).

Almost surely, 2^4638723 is an apocalyptic number.

4638723 is a deficient number, since it is larger than the sum of its proper divisors (1546245).

4638723 is a wasteful number, since it uses less digits than its factorization.

4638723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546244.

The product of its digits is 24192, while the sum is 33.

The square root of 4638723 is about 2153.7694862728. The cubic root of 4638723 is about 166.7757157453.

The spelling of 4638723 in words is "four million, six hundred thirty-eight thousand, seven hundred twenty-three".