678560736 has 96 divisors (see below), whose sum is σ = 2101413888. Its totient is φ = 187614720.

The previous prime is 678560731. The next prime is 678560741. The reversal of 678560736 is 637065876.

It is an interprime number because it is at equal distance from previous prime (678560731) and next prime (678560741).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678560731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4546 + ... + 37118.

It is an arithmetic number, because the mean of its divisors is an integer number (21889728).

Almost surely, 2^678560736 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 678560736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050706944).

678560736 is an abundant number, since it is smaller than the sum of its proper divisors (1422853152).

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

678560736 is a wasteful number, since it uses less digits than its factorization.

678560736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32624 (or 32616 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 678560736 is about 26049.1983753819. The cubic root of 678560736 is about 878.7450845690.

The spelling of 678560736 in words is "six hundred seventy-eight million, five hundred sixty thousand, seven hundred thirty-six".