127668620 has 12 divisors (see below), whose sum is σ = 268104144. Its totient is φ = 51067440.

The previous prime is 127668617. The next prime is 127668647. The reversal of 127668620 is 26866721.

127668620 = 1767² + 1768² + ... + 1806².

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3191696 + ... + 3191735.

It is an arithmetic number, because the mean of its divisors is an integer number (22342012).

Almost surely, 2^127668620 is an apocalyptic number.

127668620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127668620 is an abundant number, since it is smaller than the sum of its proper divisors (140435524).

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

127668620 is a wasteful number, since it uses less digits than its factorization.

127668620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383440 (or 6383438 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 127668620 is about 11299.0539426980. The cubic root of 127668620 is about 503.5331351069.

It can be divided in two parts, 1276 and 68620, that added together give a palindrome (69896).

The spelling of 127668620 in words is "one hundred twenty-seven million, six hundred sixty-eight thousand, six hundred twenty".