679278494 has 4 divisors (see below), whose sum is σ = 1018917744. Its totient is φ = 339639246.

The previous prime is 679278491. The next prime is 679278497. The reversal of 679278494 is 494872976.

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

It is an interprime number because it is at equal distance from previous prime (679278491) and next prime (679278497).

It is a super-3 number, since 3×679278494³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679278491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169819622 + ... + 169819625.

It is an arithmetic number, because the mean of its divisors is an integer number (254729436).

Almost surely, 2^679278494 is an apocalyptic number.

679278494 is a deficient number, since it is larger than the sum of its proper divisors (339639250).

679278494 is a wasteful number, since it uses less digits than its factorization.

679278494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339639249.

The product of its digits is 6096384, while the sum is 56.

The square root of 679278494 is about 26062.9717031654. The cubic root of 679278494 is about 879.0548107412.

The spelling of 679278494 in words is "six hundred seventy-nine million, two hundred seventy-eight thousand, four hundred ninety-four".