77271063 has 4 divisors (see below), whose sum is σ = 103028088. Its totient is φ = 51514040.

The previous prime is 77271049. The next prime is 77271071. The reversal of 77271063 is 36017277.

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 77271063 - 2⁵ = 77271031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77271023) 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, 12878508 + ... + 12878513.

It is an arithmetic number, because the mean of its divisors is an integer number (25757022).

Almost surely, 2^77271063 is an apocalyptic number.

77271063 is a deficient number, since it is larger than the sum of its proper divisors (25757025).

77271063 is a wasteful number, since it uses less digits than its factorization.

77271063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25757024.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 77271063 is about 8790.3960661622. The cubic root of 77271063 is about 425.9307178652.

Adding to 77271063 its sum of digits (33), we get a triangular number (77271096 = T₁₂₄₃₁).

The spelling of 77271063 in words is "seventy-seven million, two hundred seventy-one thousand, sixty-three".