276689493 has 32 divisors (see below), whose sum is σ = 428534400. Its totient is φ = 176214528.

The previous prime is 276689461. The next prime is 276689507. The reversal of 276689493 is 394986672.

It is a happy number.

276689493 is a `hidden beast` number, since 2 + 76 + 6 + 89 + 493 = 666.

It is not a de Polignac number, because 276689493 - 2⁵ = 276689461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276689393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74130 + ... + 77772.

It is an arithmetic number, because the mean of its divisors is an integer number (13391700).

Almost surely, 2^276689493 is an apocalyptic number.

It is an amenable number.

276689493 is a deficient number, since it is larger than the sum of its proper divisors (151844907).

276689493 is a wasteful number, since it uses less digits than its factorization.

276689493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778 (or 3772 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 276689493 is about 16633.9860827163. The cubic root of 276689493 is about 651.6247268037.

The spelling of 276689493 in words is "two hundred seventy-six million, six hundred eighty-nine thousand, four hundred ninety-three".