611590897 has 4 divisors (see below), whose sum is σ = 611767156. Its totient is φ = 611414640.

The previous prime is 611590817. The next prime is 611590933. The reversal of 611590897 is 798095116.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 269747776 + 341843121 = 16424^2 + 18489^2 .

It is a cyclic number.

It is not a de Polignac number, because 611590897 - 2¹⁹ = 611066609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611590817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82818 + ... + 89899.

It is an arithmetic number, because the mean of its divisors is an integer number (152941789).

Almost surely, 2^611590897 is an apocalyptic number.

It is an amenable number.

611590897 is a deficient number, since it is larger than the sum of its proper divisors (176259).

611590897 is a wasteful number, since it uses less digits than its factorization.

611590897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176258.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 611590897 is about 24730.3638671169. The cubic root of 611590897 is about 848.8292518774.

The spelling of 611590897 in words is "six hundred eleven million, five hundred ninety thousand, eight hundred ninety-seven".