3645432726 has 32 divisors (see below), whose sum is σ = 7909036128. Its totient is φ = 1113480960.

The previous prime is 3645432709. The next prime is 3645432727. The reversal of 3645432726 is 6272345463.

3645432726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645432727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159885 + ... + 181256.

It is an arithmetic number, because the mean of its divisors is an integer number (247157379).

Almost surely, 2^3645432726 is an apocalyptic number.

3645432726 is an abundant number, since it is smaller than the sum of its proper divisors (4263603402).

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

3645432726 is a wasteful number, since it uses less digits than its factorization.

3645432726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341296.

The product of its digits is 725760, while the sum is 42.

The square root of 3645432726 is about 60377.4190074402. The cubic root of 3645432726 is about 1539.0392509203.

The spelling of 3645432726 in words is "three billion, six hundred forty-five million, four hundred thirty-two thousand, seven hundred twenty-six".