66704276 has 12 divisors (see below), whose sum is σ = 117477108. Its totient is φ = 33139392.

The previous prime is 66704257. The next prime is 66704299. The reversal of 66704276 is 67240766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13764100 + 52940176 = 3710^2 + 7276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52481 + ... + 53736.

It is an arithmetic number, because the mean of its divisors is an integer number (9789759).

Almost surely, 2^66704276 is an apocalyptic number.

It is an amenable number.

66704276 is a deficient number, since it is larger than the sum of its proper divisors (50772832).

66704276 is a wasteful number, since it uses less digits than its factorization.

66704276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106378 (or 106376 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 66704276 is about 8167.2685764581. The cubic root of 66704276 is about 405.5563678917.

The spelling of 66704276 in words is "sixty-six million, seven hundred four thousand, two hundred seventy-six".