7886897864 has 16 divisors (see below), whose sum is σ = 14788903920. Its totient is φ = 3943190160.

The previous prime is 7886897861. The next prime is 7886897897. The reversal of 7886897864 is 4687986887.

It is not an unprimeable number, because it can be changed into a prime (7886897861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176507 + ... + 216629.

It is an arithmetic number, because the mean of its divisors is an integer number (924306495).

Almost surely, 2^7886897864 is an apocalyptic number.

It is an amenable number.

7886897864 is a deficient number, since it is larger than the sum of its proper divisors (6902006056).

7886897864 is a wasteful number, since it uses less digits than its factorization.

7886897864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64700 (or 64696 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 71.

The square root of 7886897864 is about 88808.2083143219. The cubic root of 7886897864 is about 1990.5300528222.

The spelling of 7886897864 in words is "seven billion, eight hundred eighty-six million, eight hundred ninety-seven thousand, eight hundred sixty-four".