66230726 has 4 divisors (see below), whose sum is σ = 99346092. Its totient is φ = 33115362.

The previous prime is 66230711. The next prime is 66230737. The reversal of 66230726 is 62703266.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 66230692 and 66230701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16557680 + ... + 16557683.

It is an arithmetic number, because the mean of its divisors is an integer number (24836523).

Almost surely, 2^66230726 is an apocalyptic number.

66230726 is a deficient number, since it is larger than the sum of its proper divisors (33115366).

66230726 is a wasteful number, since it uses less digits than its factorization.

66230726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33115365.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 66230726 is about 8138.2262195149. The cubic root of 66230726 is about 404.5943731321.

The spelling of 66230726 in words is "sixty-six million, two hundred thirty thousand, seven hundred twenty-six".