679637542 has 8 divisors (see below), whose sum is σ = 1020049776. Its totient is φ = 339620952.

The previous prime is 679637537. The next prime is 679637573. The reversal of 679637542 is 245736976.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94578 + ... + 101509.

It is an arithmetic number, because the mean of its divisors is an integer number (127506222).

Almost surely, 2^679637542 is an apocalyptic number.

679637542 is a deficient number, since it is larger than the sum of its proper divisors (340412234).

679637542 is a wasteful number, since it uses less digits than its factorization.

679637542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197822.

The product of its digits is 1905120, while the sum is 49.

The square root of 679637542 is about 26069.8588795567. The cubic root of 679637542 is about 879.2096648896.

The spelling of 679637542 in words is "six hundred seventy-nine million, six hundred thirty-seven thousand, five hundred forty-two".