679671743 has 4 divisors (see below), whose sum is σ = 715443960. Its totient is φ = 643899528.

The previous prime is 679671703. The next prime is 679671767. The reversal of 679671743 is 347176976.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 679671743 - 2²⁰ = 678623167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679671691 and 679671700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679671703) 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, 17886080 + ... + 17886117.

It is an arithmetic number, because the mean of its divisors is an integer number (178860990).

Almost surely, 2^679671743 is an apocalyptic number.

679671743 is a deficient number, since it is larger than the sum of its proper divisors (35772217).

679671743 is a wasteful number, since it uses less digits than its factorization.

679671743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35772216.

The product of its digits is 1333584, while the sum is 50.

The square root of 679671743 is about 26070.5148203867. The cubic root of 679671743 is about 879.2244126257.

The spelling of 679671743 in words is "six hundred seventy-nine million, six hundred seventy-one thousand, seven hundred forty-three".