275620166 has 4 divisors (see below), whose sum is σ = 413430252. Its totient is φ = 137810082.

The previous prime is 275620129. The next prime is 275620183. The reversal of 275620166 is 661026572.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68905040 + ... + 68905043.

It is an arithmetic number, because the mean of its divisors is an integer number (103357563).

Almost surely, 2^275620166 is an apocalyptic number.

275620166 is a deficient number, since it is larger than the sum of its proper divisors (137810086).

275620166 is a wasteful number, since it uses less digits than its factorization.

275620166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137810085.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 275620166 is about 16601.8121300056. The cubic root of 275620166 is about 650.7841943544.

It can be divided in two parts, 2756 and 20166, that added together give a palindrome (22922).

The spelling of 275620166 in words is "two hundred seventy-five million, six hundred twenty thousand, one hundred sixty-six".