275705660 has 48 divisors (see below), whose sum is σ = 614718720. Its totient is φ = 103511040.

The previous prime is 275705657. The next prime is 275705663. The reversal of 275705660 is 66507572.

It is an interprime number because it is at equal distance from previous prime (275705657) and next prime (275705663).

It is a super-2 number, since 2×275705660² = 152027221912071200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275705663) 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 15 ways as a sum of consecutive naturals, for example, 155861 + ... + 157619.

It is an arithmetic number, because the mean of its divisors is an integer number (12806640).

Almost surely, 2^275705660 is an apocalyptic number.

275705660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275705660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307359360).

275705660 is an abundant number, since it is smaller than the sum of its proper divisors (339013060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

275705660 is a wasteful number, since it uses less digits than its factorization.

275705660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 275705660 is about 16604.3867697666. The cubic root of 275705660 is about 650.8514758273.

The spelling of 275705660 in words is "two hundred seventy-five million, seven hundred five thousand, six hundred sixty".