187222066 has 8 divisors (see below), whose sum is σ = 281078064. Its totient is φ = 93529380.

The previous prime is 187222039. The next prime is 187222069. The reversal of 187222066 is 660222781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (187222069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37920 + ... + 42571.

It is an arithmetic number, because the mean of its divisors is an integer number (35134758).

Almost surely, 2^187222066 is an apocalyptic number.

187222066 is a deficient number, since it is larger than the sum of its proper divisors (93855998).

187222066 is a wasteful number, since it uses less digits than its factorization.

187222066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81656.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 187222066 is about 13682.9114591888. The cubic root of 187222066 is about 572.0741769746.

The spelling of 187222066 in words is "one hundred eighty-seven million, two hundred twenty-two thousand, sixty-six".