902649 has 16 divisors (see below), whose sum is σ = 1391040. Its totient is φ = 514560.

The previous prime is 902639. The next prime is 902653. The reversal of 902649 is 946209.

It is not a de Polignac number, because 902649 - 2⁷ = 902521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (902639) 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 15 ways as a sum of consecutive naturals, for example, 244 + ... + 1365.

It is an arithmetic number, because the mean of its divisors is an integer number (86940).

2⁹⁰²⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

902649 is a deficient number, since it is larger than the sum of its proper divisors (488391).

902649 is a wasteful number, since it uses less digits than its factorization.

902649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 902649 is about 950.0784178161. The cubic root of 902649 is about 96.6435709125.

It can be divided in two parts, 902 and 649, that added together give a palindrome (1551).

The spelling of 902649 in words is "nine hundred two thousand, six hundred forty-nine".