4521646 has 4 divisors (see below), whose sum is σ = 6782472. Its totient is φ = 2260822.

The previous prime is 4521637. The next prime is 4521653. The reversal of 4521646 is 6461254.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130410 + ... + 1130413.

It is an arithmetic number, because the mean of its divisors is an integer number (1695618).

Almost surely, 2^4521646 is an apocalyptic number.

4521646 is a deficient number, since it is larger than the sum of its proper divisors (2260826).

4521646 is a wasteful number, since it uses less digits than its factorization.

4521646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260825.

The product of its digits is 5760, while the sum is 28.

The square root of 4521646 is about 2126.4162339486. The cubic root of 4521646 is about 165.3606558571.

The spelling of 4521646 in words is "four million, five hundred twenty-one thousand, six hundred forty-six".