774979 has 4 divisors (see below), whose sum is σ = 820584. Its totient is φ = 729376.

The previous prime is 774959. The next prime is 774997. The reversal of 774979 is 979477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979477 = 61 ⋅16057.

It is a cyclic number.

It is not a de Polignac number, because 774979 - 2⁹ = 774467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22777 + ... + 22810.

It is an arithmetic number, because the mean of its divisors is an integer number (205146).

2⁷⁷⁴⁹⁷⁹ is an apocalyptic number.

774979 is a deficient number, since it is larger than the sum of its proper divisors (45605).

774979 is a wasteful number, since it uses less digits than its factorization.

774979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45604.

The product of its digits is 111132, while the sum is 43.

The square root of 774979 is about 880.3289158036. The cubic root of 774979 is about 91.8536978394.

It can be divided in two parts, 7749 and 79, that multiplied together give a triangular number (612171 = T₁₁₀₆).

The spelling of 774979 in words is "seven hundred seventy-four thousand, nine hundred seventy-nine".