1987097 has 12 divisors (see below), whose sum is σ = 2339280. Its totient is φ = 1682856.

The previous prime is 1987091. The next prime is 1987099. The reversal of 1987097 is 7907891.

It is not a de Polignac number, because 1987097 - 2⁴ = 1987081 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1987091) 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, 5054 + ... + 5432.

It is an arithmetic number, because the mean of its divisors is an integer number (194940).

2^1987097 is an apocalyptic number.

It is an amenable number.

1987097 is a deficient number, since it is larger than the sum of its proper divisors (352183).

1987097 is a wasteful number, since it uses less digits than its factorization.

1987097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 1987097 is about 1409.6442813703. The cubic root of 1987097 is about 125.7205742009.

The spelling of 1987097 in words is "one million, nine hundred eighty-seven thousand, ninety-seven".