27630513 has 6 divisors (see below), whose sum is σ = 39910754. Its totient is φ = 18420336.

The previous prime is 27630509. The next prime is 27630529. The reversal of 27630513 is 31503672.

It is a happy number.

27630513 is a `hidden beast` number, since 27 + 630 + 5 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22581504 + 5049009 = 4752^2 + 2247^2 .

It is not a de Polignac number, because 27630513 - 2² = 27630509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27630413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1535020 + ... + 1535037.

Almost surely, 2^27630513 is an apocalyptic number.

It is an amenable number.

27630513 is a deficient number, since it is larger than the sum of its proper divisors (12280241).

27630513 is a wasteful number, since it uses less digits than its factorization.

27630513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070063 (or 3070060 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 27630513 is about 5256.4734375815. The cubic root of 27630513 is about 302.3172878368.

The spelling of 27630513 in words is "twenty-seven million, six hundred thirty thousand, five hundred thirteen".