127666136 has 16 divisors (see below), whose sum is σ = 257787600. Its totient is φ = 58922784.

The previous prime is 127666129. The next prime is 127666151. The reversal of 127666136 is 631666721.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 127666136.

It is a congruent 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, 613676 + ... + 613883.

It is an arithmetic number, because the mean of its divisors is an integer number (16111725).

Almost surely, 2^127666136 is an apocalyptic number.

It is an amenable number.

127666136 is an abundant number, since it is smaller than the sum of its proper divisors (130121464).

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

127666136 is a wasteful number, since it uses less digits than its factorization.

127666136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227578 (or 1227574 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 127666136 is about 11298.9440214562. The cubic root of 127666136 is about 503.5298694012.

It can be divided in two parts, 1276 and 66136, that multiplied together give a triangular number (84389536 = T₁₂₉₉₁).

The spelling of 127666136 in words is "one hundred twenty-seven million, six hundred sixty-six thousand, one hundred thirty-six".