685416240 has 60 divisors (see below), whose sum is σ = 2301858624. Its totient is φ = 182777472.

The previous prime is 685416209. The next prime is 685416253. The reversal of 685416240 is 42614586.

685416240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 685416195 and 685416204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475264 + ... + 476703.

Almost surely, 2^685416240 is an apocalyptic number.

685416240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

685416240 is an abundant number, since it is smaller than the sum of its proper divisors (1616442384).

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

685416240 is a wasteful number, since it uses less digits than its factorization.

685416240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951986 (or 951977 counting only the distinct ones).

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

The square root of 685416240 is about 26180.4553054373. The cubic root of 685416240 is about 881.6944967509.

The spelling of 685416240 in words is "six hundred eighty-five million, four hundred sixteen thousand, two hundred forty".