9954664567 has 2 divisors, whose sum is σ = 9954664568. Its totient is φ = 9954664566.

The previous prime is 9954664543. The next prime is 9954664571. The reversal of 9954664567 is 7654664599.

9954664567 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9954664567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9954664537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977332283 + 4977332284.

It is an arithmetic number, because the mean of its divisors is an integer number (4977332284).

Almost surely, 2^9954664567 is an apocalyptic number.

9954664567 is a deficient number, since it is larger than the sum of its proper divisors (1).

9954664567 is an equidigital number, since it uses as much as digits as its factorization.

9954664567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48988800, while the sum is 61.

The square root of 9954664567 is about 99773.0653382966. The cubic root of 9954664567 is about 2151.1740166036.

The spelling of 9954664567 in words is "nine billion, nine hundred fifty-four million, six hundred sixty-four thousand, five hundred sixty-seven".