779667 has 16 divisors (see below), whose sum is σ = 1201152. Its totient is φ = 440640.

The previous prime is 779663. The next prime is 779693. The reversal of 779667 is 766977.

It is not a de Polignac number, because 779667 - 2² = 779663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (779663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2742 + ... + 3012.

It is an arithmetic number, because the mean of its divisors is an integer number (75072).

2⁷⁷⁹⁶⁶⁷ is an apocalyptic number.

779667 is a deficient number, since it is larger than the sum of its proper divisors (421485).

779667 is a wasteful number, since it uses less digits than its factorization.

779667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418.

The product of its digits is 111132, while the sum is 42.

The square root of 779667 is about 882.9875423810. The cubic root of 779667 is about 92.0385393040.

The spelling of 779667 in words is "seven hundred seventy-nine thousand, six hundred sixty-seven".