1505985 has 16 divisors (see below), whose sum is σ = 2595264. Its totient is φ = 741312.

The previous prime is 1505983. The next prime is 1505993. The reversal of 1505985 is 5895051.

It is not a de Polignac number, because 1505985 - 2¹ = 1505983 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1505983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3667 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (162204).

2^1505985 is an apocalyptic number.

1505985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1505985 is a deficient number, since it is larger than the sum of its proper divisors (1089279).

1505985 is a wasteful number, since it uses less digits than its factorization.

1505985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744.

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 1505985 is about 1227.1858050026. The cubic root of 1505985 is about 114.6234692087.

The spelling of 1505985 in words is "one million, five hundred five thousand, nine hundred eighty-five".