9970787 has 2 divisors, whose sum is σ = 9970788. Its totient is φ = 9970786.

The previous prime is 9970783. The next prime is 9970811. The reversal of 9970787 is 7870799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9970787 - 2² = 9970783 is a prime.

It is not a weakly prime, because it can be changed into another prime (9970783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4985393 + 4985394.

It is an arithmetic number, because the mean of its divisors is an integer number (4985394).

Almost surely, 2^9970787 is an apocalyptic number.

9970787 is a deficient number, since it is larger than the sum of its proper divisors (1).

9970787 is an equidigital number, since it uses as much as digits as its factorization.

9970787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 9970787 is about 3157.6553010105. The cubic root of 9970787 is about 215.2334727142.

The spelling of 9970787 in words is "nine million, nine hundred seventy thousand, seven hundred eighty-seven".