798665400 has 384 divisors, whose sum is σ = 3066470400. Its totient is φ = 189734400.

The previous prime is 798665381. The next prime is 798665411. The reversal of 798665400 is 4566897.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2176017 + ... + 2176383.

It is an arithmetic number, because the mean of its divisors is an integer number (7985600).

Almost surely, 2^798665400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 798665400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533235200).

798665400 is an abundant number, since it is smaller than the sum of its proper divisors (2267805000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

798665400 is a wasteful number, since it uses less digits than its factorization.

798665400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 798665400 is about 28260.6687818954. The cubic root of 798665400 is about 927.8012573556.

The spelling of 798665400 in words is "seven hundred ninety-eight million, six hundred sixty-five thousand, four hundred".