2679661 has 4 divisors (see below), whose sum is σ = 2796192. Its totient is φ = 2563132.

The previous prime is 2679653. The next prime is 2679667. The reversal of 2679661 is 1669762.

2679661 = T₁₂₄ + T₁₂₅ + ... + T₂₆₁.

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 2679661 - 2³ = 2679653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2679661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2679667) 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, 58231 + ... + 58276.

It is an arithmetic number, because the mean of its divisors is an integer number (699048).

2^2679661 is an apocalyptic number.

It is an amenable number.

2679661 is a deficient number, since it is larger than the sum of its proper divisors (116531).

2679661 is a wasteful number, since it uses less digits than its factorization.

2679661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116530.

The product of its digits is 27216, while the sum is 37.

The square root of 2679661 is about 1636.9670124960. The cubic root of 2679661 is about 138.8971341831.

The spelling of 2679661 in words is "two million, six hundred seventy-nine thousand, six hundred sixty-one".