678061544 has 16 divisors (see below), whose sum is σ = 1271967300. Its totient is φ = 338870272.

The previous prime is 678061537. The next prime is 678061547. The reversal of 678061544 is 445160876.

It can be written as a sum of positive squares in 2 ways, for example, as 677977444 + 84100 = 26038^2 + 290^2 .

It is not an unprimeable number, because it can be changed into a prime (678061547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049 + ... + 36840.

Almost surely, 2^678061544 is an apocalyptic number.

It is an amenable number.

678061544 is a deficient number, since it is larger than the sum of its proper divisors (593905756).

678061544 is a wasteful number, since it uses less digits than its factorization.

678061544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40132 (or 40128 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 678061544 is about 26039.6148973060. The cubic root of 678061544 is about 878.5295449686.

The spelling of 678061544 in words is "six hundred seventy-eight million, sixty-one thousand, five hundred forty-four".