1662087 has 8 divisors (see below), whose sum is σ = 2532736. Its totient is φ = 949752.

The previous prime is 1662083. The next prime is 1662103. The reversal of 1662087 is 7802661.

It is a happy number.

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

It is not a de Polignac number, because 1662087 - 2² = 1662083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39553 + ... + 39594.

It is an arithmetic number, because the mean of its divisors is an integer number (316592).

2^1662087 is an apocalyptic number.

1662087 is a deficient number, since it is larger than the sum of its proper divisors (870649).

1662087 is an equidigital number, since it uses as much as digits as its factorization.

1662087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79157.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1662087 is about 1289.2195313444. The cubic root of 1662087 is about 118.4544146263.

The spelling of 1662087 in words is "one million, six hundred sixty-two thousand, eighty-seven".