165770222 has 8 divisors (see below), whose sum is σ = 253946016. Its totient is φ = 81121552.

The previous prime is 165770221. The next prime is 165770233. The reversal of 165770222 is 222077561.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165770221) 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 3 ways as a sum of consecutive naturals, for example, 881663 + ... + 881850.

It is an arithmetic number, because the mean of its divisors is an integer number (31743252).

Almost surely, 2^165770222 is an apocalyptic number.

165770222 is a deficient number, since it is larger than the sum of its proper divisors (88175794).

165770222 is a wasteful number, since it uses less digits than its factorization.

165770222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763562.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 165770222 is about 12875.1785230342. The cubic root of 165770222 is about 549.3327688389.

The spelling of 165770222 in words is "one hundred sixty-five million, seven hundred seventy thousand, two hundred twenty-two".