611983867 has 16 divisors (see below), whose sum is σ = 711014112. Its totient is φ = 520568320.

The previous prime is 611983859. The next prime is 611983871. The reversal of 611983867 is 768389116.

It is a cyclic number.

It is not a de Polignac number, because 611983867 - 2³ = 611983859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611983867.

It is not an unprimeable number, because it can be changed into a prime (611983067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22893 + ... + 41809.

It is an arithmetic number, because the mean of its divisors is an integer number (44438382).

Almost surely, 2^611983867 is an apocalyptic number.

611983867 is a deficient number, since it is larger than the sum of its proper divisors (99030245).

611983867 is a wasteful number, since it uses less digits than its factorization.

611983867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19118.

The product of its digits is 435456, while the sum is 49.

The square root of 611983867 is about 24738.3076826205. The cubic root of 611983867 is about 849.0110144552.

The spelling of 611983867 in words is "six hundred eleven million, nine hundred eighty-three thousand, eight hundred sixty-seven".