1985967 has 6 divisors (see below), whose sum is σ = 2868632. Its totient is φ = 1323972.

The previous prime is 1985939. The next prime is 1985987. The reversal of 1985967 is 7695891.

It is not a de Polignac number, because 1985967 - 2⁶ = 1985903 is a prime.

It is a d-powerful number, because it can be written as 1 + 9 + 8⁵ + 5⁹ + 9 + 6 + 7² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110323 + ... + 110340.

2^1985967 is an apocalyptic number.

1985967 is a deficient number, since it is larger than the sum of its proper divisors (882665).

1985967 is a wasteful number, since it uses less digits than its factorization.

1985967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220669 (or 220666 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 1985967 is about 1409.2434140346. The cubic root of 1985967 is about 125.6967385608.

The spelling of 1985967 in words is "one million, nine hundred eighty-five thousand, nine hundred sixty-seven".