1035661 has 4 divisors (see below), whose sum is σ = 1129824. Its totient is φ = 941500.

The previous prime is 1035659. The next prime is 1035707. The reversal of 1035661 is 1665301.

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: 1665301 = 11 ⋅151391.

It is a cyclic number.

It is not a de Polignac number, because 1035661 - 2¹ = 1035659 is a prime.

It is a super-3 number, since 3×1035661³ = 3332530413310529343, which contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1035631) 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 3 ways as a sum of consecutive naturals, for example, 47065 + ... + 47086.

It is an arithmetic number, because the mean of its divisors is an integer number (282456).

2^1035661 is an apocalyptic number.

1035661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1035661 is a deficient number, since it is larger than the sum of its proper divisors (94163).

1035661 is an equidigital number, since it uses as much as digits as its factorization.

1035661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94162.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1035661 is about 1017.6743093937. The cubic root of 1035661 is about 101.1748433775.

The spelling of 1035661 in words is "one million, thirty-five thousand, six hundred sixty-one".