800648957 has 8 divisors (see below), whose sum is σ = 829569336. Its totient is φ = 772111872.

The previous prime is 800648911. The next prime is 800648977. The reversal of 800648957 is 759846008.

It can be written as a sum of positive squares in 4 ways, for example, as 1229881 + 799419076 = 1109^2 + 28274^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 800648957 - 2¹² = 800644861 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 (800648977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91568 + ... + 99929.

It is an arithmetic number, because the mean of its divisors is an integer number (103696167).

Almost surely, 2^800648957 is an apocalyptic number.

It is an amenable number.

800648957 is a deficient number, since it is larger than the sum of its proper divisors (28920379).

800648957 is a wasteful number, since it uses less digits than its factorization.

800648957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191647.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 800648957 is about 28295.7409692696. The cubic root of 800648957 is about 928.5687148424.

The spelling of 800648957 in words is "eight hundred million, six hundred forty-eight thousand, nine hundred fifty-seven".