66970922 has 16 divisors (see below), whose sum is σ = 107956800. Its totient is φ = 31044288.

The previous prime is 66970921. The next prime is 66970949. The reversal of 66970922 is 22907966.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66970922.

It is not an unprimeable number, because it can be changed into a prime (66970921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12422 + ... + 16977.

It is an arithmetic number, because the mean of its divisors is an integer number (6747300).

Almost surely, 2^66970922 is an apocalyptic number.

66970922 is a deficient number, since it is larger than the sum of its proper divisors (40985878).

66970922 is a wasteful number, since it uses less digits than its factorization.

66970922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29485.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 66970922 is about 8183.5763575591. The cubic root of 66970922 is about 406.0960444798.

The spelling of 66970922 in words is "sixty-six million, nine hundred seventy thousand, nine hundred twenty-two".