678616948 has 24 divisors (see below), whose sum is σ = 1278058824. Its totient is φ = 314112000.

The previous prime is 678616933. The next prime is 678616969. The reversal of 678616948 is 849616876.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 66945124 + 611671824 = 8182^2 + 24732^2 .

It is a super-2 number, since 2×678616948² = 921041924225669408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77653 + ... + 85948.

It is an arithmetic number, because the mean of its divisors is an integer number (53252451).

Almost surely, 2^678616948 is an apocalyptic number.

678616948 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

678616948 is a deficient number, since it is larger than the sum of its proper divisors (599441876).

678616948 is a wasteful number, since it uses less digits than its factorization.

678616948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163683 (or 163681 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The square root of 678616948 is about 26050.2773113838. The cubic root of 678616948 is about 878.7693489923.

The spelling of 678616948 in words is "six hundred seventy-eight million, six hundred sixteen thousand, nine hundred forty-eight".