686825416 has 16 divisors (see below), whose sum is σ = 1294272000. Its totient is φ = 341686224.

The previous prime is 686825411. The next prime is 686825417. The reversal of 686825416 is 614528686.

It is not an unprimeable number, because it can be changed into a prime (686825411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214120 + ... + 217303.

It is an arithmetic number, because the mean of its divisors is an integer number (80892000).

Almost surely, 2^686825416 is an apocalyptic number.

It is an amenable number.

686825416 is a deficient number, since it is larger than the sum of its proper divisors (607446584).

686825416 is a wasteful number, since it uses less digits than its factorization.

686825416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431628 (or 431624 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 686825416 is about 26207.3542350234. The cubic root of 686825416 is about 882.2983206980.

It can be divided in two parts, 686825 and 416, that added together give a square (687241 = 829²).

The spelling of 686825416 in words is "six hundred eighty-six million, eight hundred twenty-five thousand, four hundred sixteen".