680249403 has 24 divisors (see below), whose sum is σ = 1053026208. Its totient is φ = 422053632.

The previous prime is 680249393. The next prime is 680249411. The reversal of 680249403 is 304942086.

It is a happy number.

680249403 is a `hidden beast` number, since 6 + 8 + 0 + 249 + 403 = 666.

It is not a de Polignac number, because 680249403 - 2⁴ = 680249387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680249483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36750 + ... + 52067.

It is an arithmetic number, because the mean of its divisors is an integer number (43876092).

Almost surely, 2^680249403 is an apocalyptic number.

680249403 is a deficient number, since it is larger than the sum of its proper divisors (372776805).

680249403 is a wasteful number, since it uses less digits than its factorization.

680249403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88883 (or 88880 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 680249403 is about 26081.5912666386. The cubic root of 680249403 is about 879.4734293801.

The spelling of 680249403 in words is "six hundred eighty million, two hundred forty-nine thousand, four hundred three".