680531395 has 16 divisors (see below), whose sum is σ = 844486560. Its totient is φ = 526166784.

The previous prime is 680531393. The next prime is 680531399. The reversal of 680531395 is 593135086.

It is a cyclic number.

It is not a de Polignac number, because 680531395 - 2¹ = 680531393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680531393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1410 + ... + 36919.

It is an arithmetic number, because the mean of its divisors is an integer number (52780410).

Almost surely, 2^680531395 is an apocalyptic number.

680531395 is a deficient number, since it is larger than the sum of its proper divisors (163955165).

680531395 is a wasteful number, since it uses less digits than its factorization.

680531395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38454.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 680531395 is about 26086.9966650053. The cubic root of 680531395 is about 879.5949388385.

The spelling of 680531395 in words is "six hundred eighty million, five hundred thirty-one thousand, three hundred ninety-five".