539679661 has 2 divisors, whose sum is σ = 539679662. Its totient is φ = 539679660.

The previous prime is 539679653. The next prime is 539679719. The reversal of 539679661 is 166976935.

539679661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331021636 + 208658025 = 18194^2 + 14445^2 .

It is a cyclic number.

It is not a de Polignac number, because 539679661 - 2³ = 539679653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 539679599 and 539679608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (539679631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269839830 + 269839831.

It is an arithmetic number, because the mean of its divisors is an integer number (269839831).

Almost surely, 2^539679661 is an apocalyptic number.

It is an amenable number.

539679661 is a deficient number, since it is larger than the sum of its proper divisors (1).

539679661 is an equidigital number, since it uses as much as digits as its factorization.

539679661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 52.

The square root of 539679661 is about 23231.0064568886. The cubic root of 539679661 is about 814.1642283445.

The spelling of 539679661 in words is "five hundred thirty-nine million, six hundred seventy-nine thousand, six hundred sixty-one".