687222306 has 40 divisors (see below), whose sum is σ = 1542389904. Its totient is φ = 228701880.

The previous prime is 687222299. The next prime is 687222307. The reversal of 687222306 is 603222786.

It is not an unprimeable number, because it can be changed into a prime (687222307) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107541 + ... + 113751.

Almost surely, 2^687222306 is an apocalyptic number.

687222306 is an abundant number, since it is smaller than the sum of its proper divisors (855167598).

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

687222306 is a wasteful number, since it uses less digits than its factorization.

687222306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908 (or 6899 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 687222306 is about 26214.9252526113. The cubic root of 687222306 is about 882.4682367315.

The spelling of 687222306 in words is "six hundred eighty-seven million, two hundred twenty-two thousand, three hundred six".