165961270 has 8 divisors (see below), whose sum is σ = 298730304. Its totient is φ = 66384504.

The previous prime is 165961267. The next prime is 165961273. The reversal of 165961270 is 72169561.

It is an interprime number because it is at equal distance from previous prime (165961267) and next prime (165961273).

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 (165961273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8298054 + ... + 8298073.

It is an arithmetic number, because the mean of its divisors is an integer number (37341288).

Almost surely, 2^165961270 is an apocalyptic number.

165961270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165961270 is a deficient number, since it is larger than the sum of its proper divisors (132769034).

165961270 is a wasteful number, since it uses less digits than its factorization.

165961270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16596134.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 165961270 is about 12882.5956235535. The cubic root of 165961270 is about 549.5437207496.

The spelling of 165961270 in words is "one hundred sixty-five million, nine hundred sixty-one thousand, two hundred seventy".