77130563 has 4 divisors (see below), whose sum is σ = 77561640. Its totient is φ = 76699488.

The previous prime is 77130527. The next prime is 77130577. The reversal of 77130563 is 36503177.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36503177 = 1987 ⋅18371.

It is a cyclic number.

It is not a de Polignac number, because 77130563 - 2²⁶ = 10021699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77130503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215270 + ... + 215627.

It is an arithmetic number, because the mean of its divisors is an integer number (19390410).

Almost surely, 2^77130563 is an apocalyptic number.

77130563 is a deficient number, since it is larger than the sum of its proper divisors (431077).

77130563 is a wasteful number, since it uses less digits than its factorization.

77130563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431076.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 77130563 is about 8782.4007537803. The cubic root of 77130563 is about 425.6724082613.

The spelling of 77130563 in words is "seventy-seven million, one hundred thirty thousand, five hundred sixty-three".