1287360623 has 8 divisors (see below), whose sum is σ = 1357183968. Its totient is φ = 1218691584.

The previous prime is 1287360601. The next prime is 1287360667. The reversal of 1287360623 is 3260637821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1287360623 - 2⁶ = 1287360559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287360673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286286 + ... + 290747.

It is an arithmetic number, because the mean of its divisors is an integer number (169647996).

Almost surely, 2^1287360623 is an apocalyptic number.

1287360623 is a deficient number, since it is larger than the sum of its proper divisors (69823345).

1287360623 is an equidigital number, since it uses as much as digits as its factorization.

1287360623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577153.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 1287360623 is about 35879.8080123069. The cubic root of 1287360623 is about 1087.8442996335.

The spelling of 1287360623 in words is "one billion, two hundred eighty-seven million, three hundred sixty thousand, six hundred twenty-three".