306396684 has 108 divisors (see below), whose sum is σ = 879161920. Its totient is φ = 89812800.

The previous prime is 306396677. The next prime is 306396697. The reversal of 306396684 is 486693603.

306396684 is a `hidden beast` number, since 3 + 0 + 639 + 6 + 6 + 8 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 133902 + ... + 136170.

Almost surely, 2^306396684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306396684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439580960).

306396684 is an abundant number, since it is smaller than the sum of its proper divisors (572765236).

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

306396684 is a wasteful number, since it uses less digits than its factorization.

306396684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332 (or 2316 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 306396684 is about 17504.1904697132. The cubic root of 306396684 is about 674.1574739105.

It can be divided in two parts, 3063966 and 84, that added together give a triangular number (3064050 = T₂₄₇₅).

The spelling of 306396684 in words is "three hundred six million, three hundred ninety-six thousand, six hundred eighty-four".