660072212 has 24 divisors (see below), whose sum is σ = 1194063360. Its totient is φ = 318941280.

The previous prime is 660072199. The next prime is 660072227. The reversal of 660072212 is 212270066.

It is a congruent number.

It is an unprimeable number.

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, 95489 + ... + 102167.

It is an arithmetic number, because the mean of its divisors is an integer number (49752640).

Almost surely, 2^660072212 is an apocalyptic number.

660072212 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

660072212 is a deficient number, since it is larger than the sum of its proper divisors (533991148).

660072212 is a wasteful number, since it uses less digits than its factorization.

660072212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511 (or 7509 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 660072212 is about 25691.8705430336. The cubic root of 660072212 is about 870.6905215003.

The spelling of 660072212 in words is "six hundred sixty million, seventy-two thousand, two hundred twelve".