2608661 has 4 divisors (see below), whose sum is σ = 2845824. Its totient is φ = 2371500.

The previous prime is 2608649. The next prime is 2608663. The reversal of 2608661 is 1668062.

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.

It is a cyclic number.

It is not a de Polignac number, because 2608661 - 2¹⁰ = 2607637 is a prime.

It is a super-2 number, since 2×2608661² = 13610224425842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2608663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118565 + ... + 118586.

It is an arithmetic number, because the mean of its divisors is an integer number (711456).

2^2608661 is an apocalyptic number.

It is an amenable number.

2608661 is a deficient number, since it is larger than the sum of its proper divisors (237163).

2608661 is a wasteful number, since it uses less digits than its factorization.

2608661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237162.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2608661 is about 1615.1349788795. The cubic root of 2608661 is about 137.6594030123.

The spelling of 2608661 in words is "two million, six hundred eight thousand, six hundred sixty-one".