2679779 has 4 divisors (see below), whose sum is σ = 2820840. Its totient is φ = 2538720.

The previous prime is 2679773. The next prime is 2679811. The reversal of 2679779 is 9779762.

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

It is a cyclic number.

It is not a de Polignac number, because 2679779 - 2⁴ = 2679763 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6² + 7⁵ + 9³ + 7⁵ + 7⁵ + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2679773) 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, 70502 + ... + 70539.

It is an arithmetic number, because the mean of its divisors is an integer number (705210).

2^2679779 is an apocalyptic number.

2679779 is a deficient number, since it is larger than the sum of its proper divisors (141061).

2679779 is a wasteful number, since it uses less digits than its factorization.

2679779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141060.

The product of its digits is 333396, while the sum is 47.

The square root of 2679779 is about 1637.0030543649. The cubic root of 2679779 is about 138.8991729511.

The spelling of 2679779 in words is "two million, six hundred seventy-nine thousand, seven hundred seventy-nine".