686224634 has 32 divisors (see below), whose sum is σ = 1109721600. Its totient is φ = 317271600.

The previous prime is 686224631. The next prime is 686224663. The reversal of 686224634 is 436422686.

It is a super-3 number, since 3×686224634³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686224591 and 686224600.

It is not an unprimeable number, because it can be changed into a prime (686224631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337529 + ... + 339555.

It is an arithmetic number, because the mean of its divisors is an integer number (34678800).

Almost surely, 2^686224634 is an apocalyptic number.

686224634 is a deficient number, since it is larger than the sum of its proper divisors (423496966).

686224634 is a wasteful number, since it uses less digits than its factorization.

686224634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258.

The product of its digits is 331776, while the sum is 41.

The square root of 686224634 is about 26195.8896394072. The cubic root of 686224634 is about 882.0409901028.

The spelling of 686224634 in words is "six hundred eighty-six million, two hundred twenty-four thousand, six hundred thirty-four".