126678660 has 24 divisors (see below), whose sum is σ = 354700416. Its totient is φ = 33780960.

The previous prime is 126678659. The next prime is 126678701. The reversal of 126678660 is 66876621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055596 + ... + 1055715.

It is an arithmetic number, because the mean of its divisors is an integer number (14779184).

Almost surely, 2^126678660 is an apocalyptic number.

126678660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126678660 is an abundant number, since it is smaller than the sum of its proper divisors (228021756).

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

126678660 is a wasteful number, since it uses less digits than its factorization.

126678660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111323 (or 2111321 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 126678660 is about 11255.1614826265. The cubic root of 126678660 is about 502.2282682231.

The spelling of 126678660 in words is "one hundred twenty-six million, six hundred seventy-eight thousand, six hundred sixty".