679285549 has 4 divisors (see below), whose sum is σ = 715037440. Its totient is φ = 643533660.

The previous prime is 679285543. The next prime is 679285571. The reversal of 679285549 is 945582976.

679285549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 679285549 - 2⁷ = 679285421 is a prime.

It is a super-2 number, since 2×679285549² = 922857714160462802, which contains 22 as substring.

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 679285549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679285543) 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, 17875917 + ... + 17875954.

It is an arithmetic number, because the mean of its divisors is an integer number (178759360).

Almost surely, 2^679285549 is an apocalyptic number.

It is an amenable number.

679285549 is a deficient number, since it is larger than the sum of its proper divisors (35751891).

679285549 is a wasteful number, since it uses less digits than its factorization.

679285549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35751890.

The product of its digits is 5443200, while the sum is 55.

The square root of 679285549 is about 26063.1070480862. The cubic root of 679285549 is about 879.0578540243.

The spelling of 679285549 in words is "six hundred seventy-nine million, two hundred eighty-five thousand, five hundred forty-nine".