680555734 has 8 divisors (see below), whose sum is σ = 1020949488. Its totient is φ = 340239240.

The previous prime is 680555657. The next prime is 680555753. The reversal of 680555734 is 437555086.

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

It is a super-2 number, since 2×680555734² = 926312214160557512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14664 + ... + 39700.

It is an arithmetic number, because the mean of its divisors is an integer number (127618686).

Almost surely, 2^680555734 is an apocalyptic number.

680555734 is a deficient number, since it is larger than the sum of its proper divisors (340393754).

680555734 is a wasteful number, since it uses less digits than its factorization.

680555734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38630.

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 680555734 is about 26087.4631576165. The cubic root of 680555734 is about 879.6054248627.

The spelling of 680555734 in words is "six hundred eighty million, five hundred fifty-five thousand, seven hundred thirty-four".