65712726 has 12 divisors (see below), whose sum is σ = 142377612. Its totient is φ = 21904236.

The previous prime is 65712719. The next prime is 65712737. The reversal of 65712726 is 62721756.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1825336 + ... + 1825371.

It is an arithmetic number, because the mean of its divisors is an integer number (11864801).

Almost surely, 2^65712726 is an apocalyptic number.

65712726 is an abundant number, since it is smaller than the sum of its proper divisors (76664886).

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

65712726 is a wasteful number, since it uses less digits than its factorization.

65712726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650715 (or 3650712 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 65712726 is about 8106.3386309727. The cubic root of 65712726 is about 403.5368143559.

The spelling of 65712726 in words is "sixty-five million, seven hundred twelve thousand, seven hundred twenty-six".