66340726 has 8 divisors (see below), whose sum is σ = 99610704. Its totient is φ = 33137160.

The previous prime is 66340709. The next prime is 66340727. The reversal of 66340726 is 62704366.

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

It is a junction number, because it is equal to n+sod(n) for n = 66340691 and 66340700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66340727) 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, 14025 + ... + 18148.

It is an arithmetic number, because the mean of its divisors is an integer number (12451338).

Almost surely, 2^66340726 is an apocalyptic number.

66340726 is a deficient number, since it is larger than the sum of its proper divisors (33269978).

66340726 is a wasteful number, since it uses less digits than its factorization.

66340726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33206.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 66340726 is about 8144.9816451604. The cubic root of 66340726 is about 404.8182408511.

The spelling of 66340726 in words is "sixty-six million, three hundred forty thousand, seven hundred twenty-six".