19980707 has 2 divisors, whose sum is σ = 19980708. Its totient is φ = 19980706.

The previous prime is 19980689. The next prime is 19980713. The reversal of 19980707 is 70708991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19980707 - 2⁶ = 19980643 is a prime.

It is not a weakly prime, because it can be changed into another prime (19980907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9990353 + 9990354.

It is an arithmetic number, because the mean of its divisors is an integer number (9990354).

Almost surely, 2^19980707 is an apocalyptic number.

19980707 is a deficient number, since it is larger than the sum of its proper divisors (1).

19980707 is an equidigital number, since it uses as much as digits as its factorization.

19980707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 19980707 is about 4469.9784115810. The cubic root of 19980707 is about 271.3544514804.

The spelling of 19980707 in words is "nineteen million, nine hundred eighty thousand, seven hundred seven".