678014532 has 72 divisors (see below), whose sum is σ = 1848782936. Its totient is φ = 208272384.

The previous prime is 678014509. The next prime is 678014537. The reversal of 678014532 is 235410876.

It can be written as a sum of positive squares in 4 ways, for example, as 50211396 + 627803136 = 7086^2 + 25056^2 .

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 (678014537) 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, 522108 + ... + 523404.

Almost surely, 2^678014532 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 678014532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924391468).

678014532 is an abundant number, since it is smaller than the sum of its proper divisors (1170768404).

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

678014532 is a wasteful number, since it uses less digits than its factorization.

678014532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 678014532 is about 26038.7121801367. The cubic root of 678014532 is about 878.5092408208.

It can be divided in two parts, 6780 and 14532, that added together give a palindrome (21312).

The spelling of 678014532 in words is "six hundred seventy-eight million, fourteen thousand, five hundred thirty-two".