611087689 has 4 divisors (see below), whose sum is σ = 611842000. Its totient is φ = 610333380.

The previous prime is 611087677. The next prime is 611087707. The reversal of 611087689 is 986780116.

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 611087689 - 2¹¹ = 611085641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611081689) 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, 375939 + ... + 377560.

It is an arithmetic number, because the mean of its divisors is an integer number (152960500).

Almost surely, 2^611087689 is an apocalyptic number.

It is an amenable number.

611087689 is a deficient number, since it is larger than the sum of its proper divisors (754311).

611087689 is an equidigital number, since it uses as much as digits as its factorization.

611087689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754310.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 611087689 is about 24720.1878835902. The cubic root of 611087689 is about 848.5963865893.

The spelling of 611087689 in words is "six hundred eleven million, eighty-seven thousand, six hundred eighty-nine".