680832405 has 128 divisors (see below), whose sum is σ = 1415232000. Its totient is φ = 306892800.

The previous prime is 680832403. The next prime is 680832457. The reversal of 680832405 is 504238086.

It is not a de Polignac number, because 680832405 - 2¹ = 680832403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 680832405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680832401) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3761415 + ... + 3761595.

It is an arithmetic number, because the mean of its divisors is an integer number (11056500).

Almost surely, 2^680832405 is an apocalyptic number.

It is an amenable number.

680832405 is an abundant number, since it is smaller than the sum of its proper divisors (734399595).

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

680832405 is a wasteful number, since it uses less digits than its factorization.

680832405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 680832405 is about 26092.7653766327. The cubic root of 680832405 is about 879.7246060599.

The spelling of 680832405 in words is "six hundred eighty million, eight hundred thirty-two thousand, four hundred five".