7648696987 has 2 divisors, whose sum is σ = 7648696988. Its totient is φ = 7648696986.

The previous prime is 7648696969. The next prime is 7648696997. The reversal of 7648696987 is 7896968467.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7648696987 is a prime.

It is not a weakly prime, because it can be changed into another prime (7648696907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824348493 + 3824348494.

It is an arithmetic number, because the mean of its divisors is an integer number (3824348494).

Almost surely, 2^7648696987 is an apocalyptic number.

7648696987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7648696987 is an equidigital number, since it uses as much as digits as its factorization.

7648696987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219469824, while the sum is 70.

The square root of 7648696987 is about 87456.8292759348. The cubic root of 7648696987 is about 1970.2854583036.

The spelling of 7648696987 in words is "seven billion, six hundred forty-eight million, six hundred ninety-six thousand, nine hundred eighty-seven".