1187061 has 4 divisors (see below), whose sum is σ = 1582752. Its totient is φ = 791372.

The previous prime is 1187051. The next prime is 1187089. The reversal of 1187061 is 1607811.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1607811 = 3 ⋅535937.

It is a cyclic number.

It is not a de Polignac number, because 1187061 - 2¹¹ = 1185013 is a prime.

It is a super-2 number, since 2×1187061² = 2818227635442, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197841 + ... + 197846.

It is an arithmetic number, because the mean of its divisors is an integer number (395688).

2^1187061 is an apocalyptic number.

It is an amenable number.

1187061 is a deficient number, since it is larger than the sum of its proper divisors (395691).

1187061 is an equidigital number, since it uses as much as digits as its factorization.

1187061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395690.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 1187061 is about 1089.5232902513. The cubic root of 1187061 is about 105.8825386889.

The spelling of 1187061 in words is "one million, one hundred eighty-seven thousand, sixty-one".