4721644 has 24 divisors (see below), whose sum is σ = 8641808. Its totient is φ = 2255040.

The previous prime is 4721627. The next prime is 4721653. The reversal of 4721644 is 4461274.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8767 + ... + 9289.

Almost surely, 2^4721644 is an apocalyptic number.

It is an amenable number.

4721644 is a deficient number, since it is larger than the sum of its proper divisors (3920164).

4721644 is a wasteful number, since it uses less digits than its factorization.

4721644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 623 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 4721644 is about 2172.9344214679. The cubic root of 4721644 is about 167.7636036477.

It can be divided in two parts, 472 and 1644, that added together give a square (2116 = 46²).

The spelling of 4721644 in words is "four million, seven hundred twenty-one thousand, six hundred forty-four".