1145635 has 4 divisors (see below), whose sum is σ = 1374768. Its totient is φ = 916504.

The previous prime is 1145623. The next prime is 1145659. The reversal of 1145635 is 5365411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5365411 = 43 ⋅124777.

It is a cyclic number.

It is not a de Polignac number, because 1145635 - 2¹¹ = 1143587 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 114559 + ... + 114568.

It is an arithmetic number, because the mean of its divisors is an integer number (343692).

2^1145635 is an apocalyptic number.

1145635 is a deficient number, since it is larger than the sum of its proper divisors (229133).

1145635 is an equidigital number, since it uses as much as digits as its factorization.

1145635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229132.

The product of its digits is 1800, while the sum is 25.

The square root of 1145635 is about 1070.3434028385. The cubic root of 1145635 is about 104.6362317467.

It can be divided in two parts, 11456 and 35, that multiplied together give a triangular number (400960 = T₈₉₅).

The spelling of 1145635 in words is "one million, one hundred forty-five thousand, six hundred thirty-five".