683305491 has 32 divisors (see below), whose sum is σ = 1025187840. Its totient is φ = 401290400.

The previous prime is 683305489. The next prime is 683305517. The reversal of 683305491 is 194503386.

It is a cyclic number.

It is not a de Polignac number, because 683305491 - 2¹ = 683305489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (683305891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135766 + ... + 140708.

It is an arithmetic number, because the mean of its divisors is an integer number (32037120).

Almost surely, 2^683305491 is an apocalyptic number.

683305491 is a deficient number, since it is larger than the sum of its proper divisors (341882349).

683305491 is a wasteful number, since it uses less digits than its factorization.

683305491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 683305491 is about 26140.1126814710. The cubic root of 683305491 is about 880.7885025508.

The spelling of 683305491 in words is "six hundred eighty-three million, three hundred five thousand, four hundred ninety-one".