679193242561 has 8 divisors (see below), whose sum is σ = 682961300864. Its totient is φ = 675435522960.

The previous prime is 679193242549. The next prime is 679193242579. The reversal of 679193242561 is 165242391976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 679193242561 - 2⁷ = 679193242433 is a prime.

It is a super-2 number, since 2×679193242561² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679193242501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2452905 + ... + 2715718.

It is an arithmetic number, because the mean of its divisors is an integer number (85370162608).

Almost surely, 2^679193242561 is an apocalyptic number.

It is an amenable number.

679193242561 is a deficient number, since it is larger than the sum of its proper divisors (3768058303).

679193242561 is a wasteful number, since it uses less digits than its factorization.

679193242561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169351.

The product of its digits is 4898880, while the sum is 55.

The spelling of 679193242561 in words is "six hundred seventy-nine billion, one hundred ninety-three million, two hundred forty-two thousand, five hundred sixty-one".