3651732 has 72 divisors (see below), whose sum is σ = 10826816. Its totient is φ = 1016064.

The previous prime is 3651731. The next prime is 3651757. The reversal of 3651732 is 2371563.

It is a happy number.

3651732 is a `hidden beast` number, since 3 + 651 + 7 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3651696 and 3651705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10668 + ... + 11004.

Almost surely, 2^3651732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3651732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5413408).

3651732 is an abundant number, since it is smaller than the sum of its proper divisors (7175084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3651732 is a wasteful number, since it uses less digits than its factorization.

3651732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 392 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 3651732 is about 1910.9505488107. The cubic root of 3651732 is about 153.9925222658.

The spelling of 3651732 in words is "three million, six hundred fifty-one thousand, seven hundred thirty-two".