1649087 has 8 divisors (see below), whose sum is σ = 1810512. Its totient is φ = 1489600.

The previous prime is 1649059. The next prime is 1649099. The reversal of 1649087 is 7809461.

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

It is a cyclic number.

It is not a de Polignac number, because 1649087 - 2⁶ = 1649023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787 + ... + 2547.

It is an arithmetic number, because the mean of its divisors is an integer number (226314).

2^1649087 is an apocalyptic number.

1649087 is a deficient number, since it is larger than the sum of its proper divisors (161425).

1649087 is a wasteful number, since it uses less digits than its factorization.

1649087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1649087 is about 1284.1678239233. The cubic root of 1649087 is about 118.1447758572.

The spelling of 1649087 in words is "one million, six hundred forty-nine thousand, eighty-seven".