86734664649 has 40 divisors (see below), whose sum is σ = 137556773640. Its totient is φ = 54275526144.

The previous prime is 86734664633. The next prime is 86734664651. The reversal of 86734664649 is 94646643768.

86734664649 is a `hidden beast` number, since 86 + 7 + 34 + 66 + 464 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9495138249 + 77239526400 = 97443^2 + 277920^2 .

It is not a de Polignac number, because 86734664649 - 2⁴ = 86734664633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86734664629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 429187 + ... + 598055.

It is an arithmetic number, because the mean of its divisors is an integer number (3438919341).

Almost surely, 2^86734664649 is an apocalyptic number.

It is an amenable number.

86734664649 is a deficient number, since it is larger than the sum of its proper divisors (50822108991).

86734664649 is a wasteful number, since it uses less digits than its factorization.

86734664649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169271 (or 169262 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 63.

The spelling of 86734664649 in words is "eighty-six billion, seven hundred thirty-four million, six hundred sixty-four thousand, six hundred forty-nine".