27990707 has 2 divisors, whose sum is σ = 27990708. Its totient is φ = 27990706.

The previous prime is 27990679. The next prime is 27990749. The reversal of 27990707 is 70709972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27990707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27990757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13995353 + 13995354.

It is an arithmetic number, because the mean of its divisors is an integer number (13995354).

Almost surely, 2^27990707 is an apocalyptic number.

27990707 is a deficient number, since it is larger than the sum of its proper divisors (1).

27990707 is an equidigital number, since it uses as much as digits as its factorization.

27990707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 27990707 is about 5290.6244432959. The cubic root of 27990707 is about 303.6252993973.

The spelling of 27990707 in words is "twenty-seven million, nine hundred ninety thousand, seven hundred seven".