78610487 has 2 divisors, whose sum is σ = 78610488. Its totient is φ = 78610486.

The previous prime is 78610447. The next prime is 78610523. The reversal of 78610487 is 78401687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78610487 - 2⁶ = 78610423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78610447) 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 as a sum of consecutive naturals, namely, 39305243 + 39305244.

It is an arithmetic number, because the mean of its divisors is an integer number (39305244).

Almost surely, 2^78610487 is an apocalyptic number.

78610487 is a deficient number, since it is larger than the sum of its proper divisors (1).

78610487 is an equidigital number, since it uses as much as digits as its factorization.

78610487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 78610487 is about 8866.2555230492. The cubic root of 78610487 is about 428.3776745401.

It can be divided in two parts, 78610 and 487, that added together give a palindrome (79097).

The spelling of 78610487 in words is "seventy-eight million, six hundred ten thousand, four hundred eighty-seven".