1002668678 has 24 divisors (see below), whose sum is σ = 1710177840. Its totient is φ = 440039600.

The previous prime is 1002668677. The next prime is 1002668699. The reversal of 1002668678 is 8768662001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002668671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64418 + ... + 78453.

It is an arithmetic number, because the mean of its divisors is an integer number (71257410).

Almost surely, 2^1002668678 is an apocalyptic number.

1002668678 is a deficient number, since it is larger than the sum of its proper divisors (707509162).

1002668678 is a wasteful number, since it uses less digits than its factorization.

1002668678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142924 (or 142913 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1002668678 is about 31664.9439917395. The cubic root of 1002668678 is about 1000.8887691886. Note that the first 3 decimals are identical.

The spelling of 1002668678 in words is "one billion, two million, six hundred sixty-eight thousand, six hundred seventy-eight".