66736970 has 32 divisors (see below), whose sum is σ = 122689728. Its totient is φ = 26131968.

The previous prime is 66736933. The next prime is 66737029. The reversal of 66736970 is 7963766.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103469 + ... + 104111.

It is an arithmetic number, because the mean of its divisors is an integer number (3834054).

Almost surely, 2^66736970 is an apocalyptic number.

66736970 is a deficient number, since it is larger than the sum of its proper divisors (55952758).

66736970 is a wasteful number, since it uses less digits than its factorization.

66736970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 66736970 is about 8169.2698572149. The cubic root of 66736970 is about 405.6226159896.

The spelling of 66736970 in words is "sixty-six million, seven hundred thirty-six thousand, nine hundred seventy".