3644726 has 8 divisors (see below), whose sum is σ = 5477544. Its totient is φ = 1818880.

The previous prime is 3644699. The next prime is 3644731. The reversal of 3644726 is 6274463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3644692 and 3644701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (684693).

Almost surely, 2^3644726 is an apocalyptic number.

3644726 is a deficient number, since it is larger than the sum of its proper divisors (1832818).

3644726 is a wasteful number, since it uses less digits than its factorization.

3644726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486.

The product of its digits is 24192, while the sum is 32.

The square root of 3644726 is about 1909.1165496114. The cubic root of 3644726 is about 153.8939788622.

The spelling of 3644726 in words is "three million, six hundred forty-four thousand, seven hundred twenty-six".