1649265 has 16 divisors (see below), whose sum is σ = 2701248. Its totient is φ = 858816.

The previous prime is 1649251. The next prime is 1649267. The reversal of 1649265 is 5629461.

It is not a de Polignac number, because 1649265 - 2⁹ = 1648753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1649267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634 + ... + 1923.

It is an arithmetic number, because the mean of its divisors is an integer number (168828).

2^1649265 is an apocalyptic number.

1649265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1649265 is a deficient number, since it is larger than the sum of its proper divisors (1051983).

1649265 is a wasteful number, since it uses less digits than its factorization.

1649265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608.

The product of its digits is 12960, while the sum is 33.

The square root of 1649265 is about 1284.2371276365. The cubic root of 1649265 is about 118.1490264948.

The spelling of 1649265 in words is "one million, six hundred forty-nine thousand, two hundred sixty-five".