1987675 has 12 divisors (see below), whose sum is σ = 2523400. Its totient is φ = 1553160.

The previous prime is 1987673. The next prime is 1987679. The reversal of 1987675 is 5767891.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 1987675 - 2¹ = 1987673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

Its product of digits (105840) is a multiple of the sum of its prime divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1987673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46204 + ... + 46246.

2^1987675 is an apocalyptic number.

1987675 is a deficient number, since it is larger than the sum of its proper divisors (535725).

1987675 is an frugal number, since it uses more digits than its factorization.

1987675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 48 counting only the distinct ones).

The product of its digits is 105840, while the sum is 43.

The square root of 1987675 is about 1409.8492827249. The cubic root of 1987675 is about 125.7327627432.

Multiplying 1987675 by its sum of digits (43), we get a square (85470025 = 9245²).

1987675 divided by its sum of digits (43) gives a square (46225 = 215²).

It can be divided in two parts, 1987 and 675, that added together give a palindrome (2662).

The spelling of 1987675 in words is "one million, nine hundred eighty-seven thousand, six hundred seventy-five".