678542480 has 160 divisors (see below), whose sum is σ = 2001300480. Its totient is φ = 207797760.

The previous prime is 678542479. The next prime is 678542483. The reversal of 678542480 is 84245876.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (678542483) 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 31 ways as a sum of consecutive naturals, for example, 362507 + ... + 364373.

It is an arithmetic number, because the mean of its divisors is an integer number (12508128).

Almost surely, 2^678542480 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 678542480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000650240).

678542480 is an abundant number, since it is smaller than the sum of its proper divisors (1322758000).

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

678542480 is a wasteful number, since it uses less digits than its factorization.

678542480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 678542480 is about 26048.8479591709. The cubic root of 678542480 is about 878.7372039115.

The spelling of 678542480 in words is "six hundred seventy-eight million, five hundred forty-two thousand, four hundred eighty".