1002651 has 16 divisors (see below), whose sum is σ = 1473024. Its totient is φ = 602784.

The previous prime is 1002647. The next prime is 1002653. The reversal of 1002651 is 1562001.

It is not a de Polignac number, because 1002651 - 2² = 1002647 is a prime.

1002651 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002653) 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, 1560 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (92064).

2^1002651 is an apocalyptic number.

1002651 is a deficient number, since it is larger than the sum of its proper divisors (470373).

1002651 is a wasteful number, since it uses less digits than its factorization.

1002651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1002651 is about 1001.3246226874. The cubic root of 1002651 is about 100.0882886948.

Adding to 1002651 its reverse (1562001), we get a palindrome (2564652).

It can be divided in two parts, 1002 and 651, that added together give a triangular number (1653 = T₅₇).

The spelling of 1002651 in words is "one million, two thousand, six hundred fifty-one".