72655127 has 4 divisors (see below), whose sum is σ = 76928976. Its totient is φ = 68381280.

The previous prime is 72655123. The next prime is 72655133. The reversal of 72655127 is 72155627.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72655127 - 2² = 72655123 is a prime.

It is a super-2 number, since 2×72655127² = 10557534958772258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72655123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136899 + ... + 2136932.

It is an arithmetic number, because the mean of its divisors is an integer number (19232244).

Almost surely, 2^72655127 is an apocalyptic number.

72655127 is a deficient number, since it is larger than the sum of its proper divisors (4273849).

72655127 is a wasteful number, since it uses less digits than its factorization.

72655127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273848.

The product of its digits is 29400, while the sum is 35.

The square root of 72655127 is about 8523.7976864775. The cubic root of 72655127 is about 417.2747337966.

Subtracting from 72655127 its reverse (72155627), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 72655127 in words is "seventy-two million, six hundred fifty-five thousand, one hundred twenty-seven".