678003488 has 18 divisors (see below), whose sum is σ = 1335109419. Its totient is φ = 338928096.

The previous prime is 678003479. The next prime is 678003493. The reversal of 678003488 is 884300876.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 339001744 + 339001744 = 18412^2 + 18412^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18412.

It is a super-2 number, since 2×678003488² = 919377459480332288, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 144995 + ... + 149597.

Almost surely, 2^678003488 is an apocalyptic number.

It is an amenable number.

678003488 is a deficient number, since it is larger than the sum of its proper divisors (657105931).

678003488 is an frugal number, since it uses more digits than its factorization.

678003488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9216 (or 4605 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 678003488 is about 26038.5001104134. The cubic root of 678003488 is about 878.5044708597.

The spelling of 678003488 in words is "six hundred seventy-eight million, three thousand, four hundred eighty-eight".