680531386 has 16 divisors (see below), whose sum is σ = 1081515240. Its totient is φ = 320051200.

The previous prime is 680531353. The next prime is 680531387. The reversal of 680531386 is 683135086.

It can be written as a sum of positive squares in 4 ways, for example, as 611325625 + 69205761 = 24725^2 + 8319^2 .

It is not an unprimeable number, because it can be changed into a prime (680531387) 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, 59370 + ... + 69898.

Almost surely, 2^680531386 is an apocalyptic number.

680531386 is a deficient number, since it is larger than the sum of its proper divisors (400983854).

680531386 is a wasteful number, since it uses less digits than its factorization.

680531386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12449.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 680531386 is about 26086.9964925056. The cubic root of 680531386 is about 879.5949349610.

The spelling of 680531386 in words is "six hundred eighty million, five hundred thirty-one thousand, three hundred eighty-six".