77648127 has 8 divisors (see below), whose sum is σ = 105484464. Its totient is φ = 50788608.

The previous prime is 77648119. The next prime is 77648159. The reversal of 77648127 is 72184677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77648127 - 2³ = 77648119 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77648177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244018 + ... + 244335.

It is an arithmetic number, because the mean of its divisors is an integer number (13185558).

Almost surely, 2^77648127 is an apocalyptic number.

77648127 is a deficient number, since it is larger than the sum of its proper divisors (27836337).

77648127 is a wasteful number, since it uses less digits than its factorization.

77648127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488409.

The product of its digits is 131712, while the sum is 42.

The square root of 77648127 is about 8811.8174629301. The cubic root of 77648127 is about 426.6224067723.

The spelling of 77648127 in words is "seventy-seven million, six hundred forty-eight thousand, one hundred twenty-seven".