66485726 has 4 divisors (see below), whose sum is σ = 99728592. Its totient is φ = 33242862.

The previous prime is 66485717. The next prime is 66485729. The reversal of 66485726 is 62758466.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66485729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621430 + ... + 16621433.

It is an arithmetic number, because the mean of its divisors is an integer number (24932148).

Almost surely, 2^66485726 is an apocalyptic number.

66485726 is a deficient number, since it is larger than the sum of its proper divisors (33242866).

66485726 is a wasteful number, since it uses less digits than its factorization.

66485726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33242865.

The product of its digits is 483840, while the sum is 44.

The square root of 66485726 is about 8153.8779730874. The cubic root of 66485726 is about 405.1129614283.

The spelling of 66485726 in words is "sixty-six million, four hundred eighty-five thousand, seven hundred twenty-six".