2602661 has 4 divisors (see below), whose sum is σ = 2663232. Its totient is φ = 2542092.

The previous prime is 2602637. The next prime is 2602673. The reversal of 2602661 is 1662062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1662062 = 2 ⋅831031.

It is a cyclic number.

It is not a de Polignac number, because 2602661 - 2⁶ = 2602597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2602681) 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 3 ways as a sum of consecutive naturals, for example, 30221 + ... + 30306.

It is an arithmetic number, because the mean of its divisors is an integer number (665808).

2^2602661 is an apocalyptic number.

It is an amenable number.

2602661 is a deficient number, since it is larger than the sum of its proper divisors (60571).

2602661 is an equidigital number, since it uses as much as digits as its factorization.

2602661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60570.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2602661 is about 1613.2764797145. The cubic root of 2602661 is about 137.5537817159.

The spelling of 2602661 in words is "two million, six hundred two thousand, six hundred sixty-one".