27642613 has 4 divisors (see below), whose sum is σ = 27731808. Its totient is φ = 27553420.

The previous prime is 27642581. The next prime is 27642617. The reversal of 27642613 is 31624672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27642613 - 2⁵ = 27642581 is a prime.

It is a super-2 number, since 2×27642613² = 1528228106935538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27642617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44131 + ... + 44752.

It is an arithmetic number, because the mean of its divisors is an integer number (6932952).

Almost surely, 2^27642613 is an apocalyptic number.

It is an amenable number.

27642613 is a deficient number, since it is larger than the sum of its proper divisors (89195).

27642613 is an equidigital number, since it uses as much as digits as its factorization.

27642613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89194.

The product of its digits is 12096, while the sum is 31.

The square root of 27642613 is about 5257.6242733767. The cubic root of 27642613 is about 302.3614118256.

The spelling of 27642613 in words is "twenty-seven million, six hundred forty-two thousand, six hundred thirteen".