680955897 has 8 divisors (see below), whose sum is σ = 914569056. Its totient is φ = 450656672.

The previous prime is 680955883. The next prime is 680955901. The reversal of 680955897 is 798559086.

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

It is a cyclic number.

It is not a de Polignac number, because 680955897 - 2⁶ = 680955833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680955097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828003 + ... + 828824.

It is an arithmetic number, because the mean of its divisors is an integer number (114321132).

Almost surely, 2^680955897 is an apocalyptic number.

It is an amenable number.

680955897 is a deficient number, since it is larger than the sum of its proper divisors (233613159).

680955897 is a wasteful number, since it uses less digits than its factorization.

680955897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656967.

The product of its (nonzero) digits is 5443200, while the sum is 57.

The square root of 680955897 is about 26095.1316724020. The cubic root of 680955897 is about 879.7777921218. Note that the first 4 decimals are identical.

The spelling of 680955897 in words is "six hundred eighty million, nine hundred fifty-five thousand, eight hundred ninety-seven".