686272426 has 8 divisors (see below), whose sum is σ = 1176467040. Its totient is φ = 294116748.

The previous prime is 686272423. The next prime is 686272471. The reversal of 686272426 is 624272686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (686272423) 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, 24509716 + ... + 24509743.

It is an arithmetic number, because the mean of its divisors is an integer number (147058380).

Almost surely, 2^686272426 is an apocalyptic number.

686272426 is a deficient number, since it is larger than the sum of its proper divisors (490194614).

686272426 is a wasteful number, since it uses less digits than its factorization.

686272426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49019468.

The product of its digits is 387072, while the sum is 43.

The square root of 686272426 is about 26196.8018277041. The cubic root of 686272426 is about 882.0614661599.

The spelling of 686272426 in words is "six hundred eighty-six million, two hundred seventy-two thousand, four hundred twenty-six".