3966726 has 8 divisors (see below), whose sum is σ = 7933464. Its totient is φ = 1322240.

The previous prime is 3966719. The next prime is 3966727. The reversal of 3966726 is 6276693.

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

3966726 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330555 + ... + 330566.

It is an arithmetic number, because the mean of its divisors is an integer number (991683).

Almost surely, 2^3966726 is an apocalyptic number.

3966726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3966726 is a wasteful number, since it uses less digits than its factorization.

3966726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661126.

The product of its digits is 81648, while the sum is 39.

The square root of 3966726 is about 1991.6641283108. The cubic root of 3966726 is about 158.2987191800.

Subtracting from 3966726 its product of digits (81648), we obtain a triangular number (3885078 = T₂₇₈₇).

It can be divided in two parts, 39667 and 26, that added together give a palindrome (39693).

The spelling of 3966726 in words is "three million, nine hundred sixty-six thousand, seven hundred twenty-six".