1660535 has 8 divisors (see below), whose sum is σ = 2010960. Its totient is φ = 1316224.

The previous prime is 1660517. The next prime is 1660553. The reversal of 1660535 is 5350661.

It is an interprime number because it is at equal distance from previous prime (1660517) and next prime (1660553).

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

It is not a de Polignac number, because 1660535 - 2⁶ = 1660471 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 905 + ... + 2034.

It is an arithmetic number, because the mean of its divisors is an integer number (251370).

2^1660535 is an apocalyptic number.

1660535 is a deficient number, since it is larger than the sum of its proper divisors (350425).

1660535 is a wasteful number, since it uses less digits than its factorization.

1660535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1660535 is about 1288.6174762124. The cubic root of 1660535 is about 118.4175335840.

The spelling of 1660535 in words is "one million, six hundred sixty thousand, five hundred thirty-five".