13072987 has 2 divisors, whose sum is σ = 13072988. Its totient is φ = 13072986.

The previous prime is 13072967. The next prime is 13072991. The reversal of 13072987 is 78927031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13072987 - 2⁷ = 13072859 is a prime.

It is not a weakly prime, because it can be changed into another prime (13072937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6536493 + 6536494.

It is an arithmetic number, because the mean of its divisors is an integer number (6536494).

Almost surely, 2^13072987 is an apocalyptic number.

13072987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13072987 is an equidigital number, since it uses as much as digits as its factorization.

13072987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 13072987 is about 3615.6585845458. The cubic root of 13072987 is about 235.5726910504.

It can be divided in two parts, 130729 and 87, that added together give a triangular number (130816 = T₅₁₁).

The spelling of 13072987 in words is "thirteen million, seventy-two thousand, nine hundred eighty-seven".