1987475 has 24 divisors (see below), whose sum is σ = 2895648. Its totient is φ = 1324800.

The previous prime is 1987471. The next prime is 1987477. The reversal of 1987475 is 5747891.

It is not a de Polignac number, because 1987475 - 2² = 1987471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (1987471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7037 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (120652).

2^1987475 is an apocalyptic number.

1987475 is a deficient number, since it is larger than the sum of its proper divisors (908173).

1987475 is a wasteful number, since it uses less digits than its factorization.

1987475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 330 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 1987475 is about 1409.7783513730. The cubic root of 1987475 is about 125.7285455219.

The spelling of 1987475 in words is "one million, nine hundred eighty-seven thousand, four hundred seventy-five".