680046137 has 4 divisors (see below), whose sum is σ = 680515620. Its totient is φ = 679576656.

The previous prime is 680046113. The next prime is 680046139. The reversal of 680046137 is 731640086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 479653801 + 200392336 = 21901^2 + 14156^2 .

It is a cyclic number.

It is not a de Polignac number, because 680046137 - 2¹⁶ = 679980601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680046097 and 680046106.

It is not an unprimeable number, because it can be changed into a prime (680046139) by changing a digit.

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, 232562 + ... + 235467.

It is an arithmetic number, because the mean of its divisors is an integer number (170128905).

Almost surely, 2^680046137 is an apocalyptic number.

It is an amenable number.

680046137 is a deficient number, since it is larger than the sum of its proper divisors (469483).

680046137 is a wasteful number, since it uses less digits than its factorization.

680046137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469482.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 680046137 is about 26077.6942423980. The cubic root of 680046137 is about 879.3858218770.

The spelling of 680046137 in words is "six hundred eighty million, forty-six thousand, one hundred thirty-seven".