648896167 has 4 divisors (see below), whose sum is σ = 648971856. Its totient is φ = 648820480.

The previous prime is 648896161. The next prime is 648896177. The reversal of 648896167 is 761698846.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648896167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648896161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23059 + ... + 42772.

It is an arithmetic number, because the mean of its divisors is an integer number (162242964).

Almost surely, 2^648896167 is an apocalyptic number.

648896167 is a deficient number, since it is larger than the sum of its proper divisors (75689).

648896167 is an equidigital number, since it uses as much as digits as its factorization.

648896167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75688.

The product of its digits is 3483648, while the sum is 55.

The square root of 648896167 is about 25473.4404233115. The cubic root of 648896167 is about 865.7484770914.

The spelling of 648896167 in words is "six hundred forty-eight million, eight hundred ninety-six thousand, one hundred sixty-seven".