1161567 has 16 divisors (see below), whose sum is σ = 1877760. Its totient is φ = 703800.

The previous prime is 1161553. The next prime is 1161581. The reversal of 1161567 is 7651611.

It is an interprime number because it is at equal distance from previous prime (1161553) and next prime (1161581).

It is not a de Polignac number, because 1161567 - 2⁴ = 1161551 is a prime.

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

1161567 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161547) 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 15 ways as a sum of consecutive naturals, for example, 1659 + ... + 2252.

It is an arithmetic number, because the mean of its divisors is an integer number (117360).

2^1161567 is an apocalyptic number.

1161567 is a deficient number, since it is larger than the sum of its proper divisors (716193).

1161567 is a wasteful number, since it uses less digits than its factorization.

1161567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931 (or 3925 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 1161567 is about 1077.7601774050. The cubic root of 1161567 is about 105.1190486455.

It can be divided in two parts, 1161 and 567, that added together give a cube (1728 = 12³).

The spelling of 1161567 in words is "one million, one hundred sixty-one thousand, five hundred sixty-seven".