685003420 has 24 divisors (see below), whose sum is σ = 1439028864. Its totient is φ = 273902016.

The previous prime is 685003381. The next prime is 685003471. The reversal of 685003420 is 24300586.

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 7 ways as a sum of consecutive naturals, for example, 78517 + ... + 86803.

It is an arithmetic number, because the mean of its divisors is an integer number (59959536).

Almost surely, 2^685003420 is an apocalyptic number.

It is an amenable number.

685003420 is an abundant number, since it is smaller than the sum of its proper divisors (754025444).

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

685003420 is a wasteful number, since it uses less digits than its factorization.

685003420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12429 (or 12427 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 685003420 is about 26172.5699922648. The cubic root of 685003420 is about 881.5174489954.

The spelling of 685003420 in words is "six hundred eighty-five million, three thousand, four hundred twenty".