6636798426 has 8 divisors (see below), whose sum is σ = 13273596864. Its totient is φ = 2212266140.

The previous prime is 6636798367. The next prime is 6636798433. The reversal of 6636798426 is 6248976366.

It is a happy number.

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

6636798426 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553066530 + ... + 553066541.

It is an arithmetic number, because the mean of its divisors is an integer number (1659199608).

Almost surely, 2^6636798426 is an apocalyptic number.

6636798426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6636798426 is a wasteful number, since it uses less digits than its factorization.

6636798426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106133076.

The product of its digits is 15676416, while the sum is 57.

The square root of 6636798426 is about 81466.5478954399. The cubic root of 6636798426 is about 1879.2571406776.

The spelling of 6636798426 in words is "six billion, six hundred thirty-six million, seven hundred ninety-eight thousand, four hundred twenty-six".