83778798 has 8 divisors (see below), whose sum is σ = 167557608. Its totient is φ = 27926264.

The previous prime is 83778763. The next prime is 83778869. The reversal of 83778798 is 89787738.

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

83778798 is an admirable number.

It is a Curzon number.

It is a congruent 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, 6981561 + ... + 6981572.

It is an arithmetic number, because the mean of its divisors is an integer number (20944701).

Almost surely, 2^83778798 is an apocalyptic number.

83778798 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.

83778798 is a wasteful number, since it uses less digits than its factorization.

83778798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13963138.

The product of its digits is 4741632, while the sum is 57.

The square root of 83778798 is about 9153.0758764472. The cubic root of 83778798 is about 437.5671481153.

The spelling of 83778798 in words is "eighty-three million, seven hundred seventy-eight thousand, seven hundred ninety-eight".