66970706 has 16 divisors (see below), whose sum is σ = 115356960. Its totient is φ = 28838880.

The previous prime is 66970699. The next prime is 66970759. The reversal of 66970706 is 60707966.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79691 + ... + 80526.

It is an arithmetic number, because the mean of its divisors is an integer number (7209810).

Almost surely, 2^66970706 is an apocalyptic number.

66970706 is a deficient number, since it is larger than the sum of its proper divisors (48386254).

66970706 is a wasteful number, since it uses less digits than its factorization.

66970706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160249.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 66970706 is about 8183.5631603844. The cubic root of 66970706 is about 406.0956078881.

It can be divided in two parts, 66970 and 706, that added together give a palindrome (67676).

The spelling of 66970706 in words is "sixty-six million, nine hundred seventy thousand, seven hundred six".