127691265 has 16 divisors (see below), whose sum is σ = 220022208. Its totient is φ = 62863296.

The previous prime is 127691251. The next prime is 127691269. The reversal of 127691265 is 562196721.

It is not a de Polignac number, because 127691265 - 2¹² = 127687169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (127691269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327219 + ... + 327608.

It is an arithmetic number, because the mean of its divisors is an integer number (13751388).

Almost surely, 2^127691265 is an apocalyptic number.

127691265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127691265 is a deficient number, since it is larger than the sum of its proper divisors (92330943).

127691265 is a wasteful number, since it uses less digits than its factorization.

127691265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654848.

The product of its digits is 45360, while the sum is 39.

The square root of 127691265 is about 11300.0559733127. The cubic root of 127691265 is about 503.5629044523.

The spelling of 127691265 in words is "one hundred twenty-seven million, six hundred ninety-one thousand, two hundred sixty-five".