1987069 has 8 divisors (see below), whose sum is σ = 2344448. Its totient is φ = 1648080.

The previous prime is 1987067. The next prime is 1987081. The reversal of 1987069 is 9607891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1987069 - 2¹ = 1987067 is a prime.

It is a super-2 number, since 2×1987069² = 7896886421522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4362 + ... + 4795.

It is an arithmetic number, because the mean of its divisors is an integer number (293056).

2^1987069 is an apocalyptic number.

It is an amenable number.

1987069 is a deficient number, since it is larger than the sum of its proper divisors (357379).

1987069 is an equidigital number, since it uses as much as digits as its factorization.

1987069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9195.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1987069 is about 1409.6343497517. The cubic root of 1987069 is about 125.7199836924.

The spelling of 1987069 in words is "one million, nine hundred eighty-seven thousand, sixty-nine".