680857254 has 72 divisors (see below), whose sum is σ = 1872068328. Its totient is φ = 176843520.

The previous prime is 680857249. The next prime is 680857301. The reversal of 680857254 is 452758086.

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 35 ways as a sum of consecutive naturals, for example, 25387 + ... + 44790.

It is an arithmetic number, because the mean of its divisors is an integer number (26000949).

Almost surely, 2^680857254 is an apocalyptic number.

680857254 is an abundant number, since it is smaller than the sum of its proper divisors (1191211074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680857254 is a wasteful number, since it uses less digits than its factorization.

680857254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70210 (or 70200 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 680857254 is about 26093.2415387587. The cubic root of 680857254 is about 879.7353086502.

The spelling of 680857254 in words is "six hundred eighty million, eight hundred fifty-seven thousand, two hundred fifty-four".