1260064987 has 2 divisors, whose sum is σ = 1260064988. Its totient is φ = 1260064986.

The previous prime is 1260064979. The next prime is 1260064997. The reversal of 1260064987 is 7894600621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1260064987 - 2³ = 1260064979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1260064957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630032493 + 630032494.

It is an arithmetic number, because the mean of its divisors is an integer number (630032494).

Almost surely, 2^1260064987 is an apocalyptic number.

1260064987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260064987 is an equidigital number, since it uses as much as digits as its factorization.

1260064987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1260064987 is about 35497.3940874538. The cubic root of 1260064987 is about 1080.1008670652.

The spelling of 1260064987 in words is "one billion, two hundred sixty million, sixty-four thousand, nine hundred eighty-seven".