678242412 has 72 divisors (see below), whose sum is σ = 1767038000. Its totient is φ = 219189888.

The previous prime is 678242399. The next prime is 678242417. The reversal of 678242412 is 214242876.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (678242417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464139 + ... + 465597.

Almost surely, 2^678242412 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 678242412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883519000).

678242412 is an abundant number, since it is smaller than the sum of its proper divisors (1088795588).

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

678242412 is a wasteful number, since it uses less digits than its factorization.

678242412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1850 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 678242412 is about 26043.0876049673. The cubic root of 678242412 is about 878.6076518194.

It can be divided in two parts, 6782 and 42412, that added together give a palindrome (49194).

The spelling of 678242412 in words is "six hundred seventy-eight million, two hundred forty-two thousand, four hundred twelve".