77130587 has 2 divisors, whose sum is σ = 77130588. Its totient is φ = 77130586.

The previous prime is 77130577. The next prime is 77130593. The reversal of 77130587 is 78503177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77130587 - 2⁸ = 77130331 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77130587.

It is not a weakly prime, because it can be changed into another prime (77130527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38565293 + 38565294.

It is an arithmetic number, because the mean of its divisors is an integer number (38565294).

Almost surely, 2^77130587 is an apocalyptic number.

77130587 is a deficient number, since it is larger than the sum of its proper divisors (1).

77130587 is an equidigital number, since it uses as much as digits as its factorization.

77130587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 77130587 is about 8782.4021201491. The cubic root of 77130587 is about 425.6724524121.

The spelling of 77130587 in words is "seventy-seven million, one hundred thirty thousand, five hundred eighty-seven".