612989827 has 2 divisors, whose sum is σ = 612989828. Its totient is φ = 612989826.

The previous prime is 612989803. The next prime is 612989831. The reversal of 612989827 is 728989216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612989827 - 2¹¹ = 612987779 is a prime.

It is not a weakly prime, because it can be changed into another prime (612989887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306494913 + 306494914.

It is an arithmetic number, because the mean of its divisors is an integer number (306494914).

Almost surely, 2^612989827 is an apocalyptic number.

612989827 is a deficient number, since it is larger than the sum of its proper divisors (1).

612989827 is an equidigital number, since it uses as much as digits as its factorization.

612989827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 612989827 is about 24758.6313636275. The cubic root of 612989827 is about 849.4759524097.

The spelling of 612989827 in words is "six hundred twelve million, nine hundred eighty-nine thousand, eight hundred twenty-seven".