1190645 has 8 divisors (see below), whose sum is σ = 1456056. Its totient is φ = 934336.

The previous prime is 1190639. The next prime is 1190647. The reversal of 1190645 is 5460911.

It can be written as a sum of positive squares in 4 ways, for example, as 611524 + 579121 = 782^2 + 761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1190645 - 2¹⁰ = 1189621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1190647) 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 7 ways as a sum of consecutive naturals, for example, 1982 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (182007).

2^1190645 is an apocalyptic number.

It is an amenable number.

1190645 is a deficient number, since it is larger than the sum of its proper divisors (265411).

1190645 is an equidigital number, since it uses as much as digits as its factorization.

1190645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1190645 is about 1091.1668066799. The cubic root of 1190645 is about 105.9889925677.

The spelling of 1190645 in words is "one million, one hundred ninety thousand, six hundred forty-five".