276620013 has 12 divisors (see below), whose sum is σ = 399740640. Its totient is φ = 184331016.

The previous prime is 276619999. The next prime is 276620017. The reversal of 276620013 is 310026672.

It is a happy number.

276620013 is a `hidden beast` number, since 27 + 6 + 620 + 0 + 13 = 666.

It is not a de Polignac number, because 276620013 - 2¹⁰ = 276618989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276620017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19920 + ... + 30822.

It is an arithmetic number, because the mean of its divisors is an integer number (33311720).

Almost surely, 2^276620013 is an apocalyptic number.

It is an amenable number.

276620013 is a deficient number, since it is larger than the sum of its proper divisors (123120627).

276620013 is a wasteful number, since it uses less digits than its factorization.

276620013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13728 (or 13725 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 276620013 is about 16631.8974563938. The cubic root of 276620013 is about 651.5701786822.

Adding to 276620013 its reverse (310026672), we get a palindrome (586646685).

The spelling of 276620013 in words is "two hundred seventy-six million, six hundred twenty thousand, thirteen".