276066681 has 16 divisors (see below), whose sum is σ = 402032640. Its totient is φ = 167112720.

The previous prime is 276066667. The next prime is 276066683. The reversal of 276066681 is 186660672.

It is a happy number.

It is not a de Polignac number, because 276066681 - 2⁹ = 276066169 is a prime.

It is a super-2 number, since 2×276066681² = 152425624716711522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (276066683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25776 + ... + 34878.

It is an arithmetic number, because the mean of its divisors is an integer number (25127040).

Almost surely, 2^276066681 is an apocalyptic number.

It is an amenable number.

276066681 is a deficient number, since it is larger than the sum of its proper divisors (125965959).

276066681 is a wasteful number, since it uses less digits than its factorization.

276066681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10036.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 276066681 is about 16615.2544669048. The cubic root of 276066681 is about 651.1354363437.

The spelling of 276066681 in words is "two hundred seventy-six million, sixty-six thousand, six hundred eighty-one".