2661002 has 4 divisors (see below), whose sum is σ = 3991506. Its totient is φ = 1330500.

The previous prime is 2660989. The next prime is 2661013. The reversal of 2661002 is 2001662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2660161 + 841 = 1631^2 + 29^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665249 + ... + 665252.

2^2661002 is an apocalyptic number.

2661002 is a deficient number, since it is larger than the sum of its proper divisors (1330504).

2661002 is a wasteful number, since it uses less digits than its factorization.

2661002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330503.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2661002 is about 1631.2577969162. The cubic root of 2661002 is about 138.5739937477.

Adding to 2661002 its reverse (2001662), we get a palindrome (4662664).

The spelling of 2661002 in words is "two million, six hundred sixty-one thousand, two".