611161065 has 32 divisors (see below), whose sum is σ = 1096151040. Its totient is φ = 323059968.

The previous prime is 611161027. The next prime is 611161091. The reversal of 611161065 is 560161116.

It is not a de Polignac number, because 611161065 - 2¹² = 611156969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4777 + ... + 35286.

It is an arithmetic number, because the mean of its divisors is an integer number (34254720).

Almost surely, 2^611161065 is an apocalyptic number.

It is an amenable number.

611161065 is a deficient number, since it is larger than the sum of its proper divisors (484989975).

611161065 is a wasteful number, since it uses less digits than its factorization.

611161065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40190 (or 40184 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 611161065 is about 24721.6719701561. The cubic root of 611161065 is about 848.6303501363.

It can be divided in two parts, 6111 and 61065, that added together give a palindrome (67176).

The spelling of 611161065 in words is "six hundred eleven million, one hundred sixty-one thousand, sixty-five".