196773678 has 128 divisors (see below), whose sum is σ = 479969280. Its totient is φ = 59616000.

The previous prime is 196773677. The next prime is 196773697. The reversal of 196773678 is 876377691.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196773677) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3225768 + ... + 3225828.

It is an arithmetic number, because the mean of its divisors is an integer number (3749760).

Almost surely, 2^196773678 is an apocalyptic number.

196773678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 196773678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239984640).

196773678 is an abundant number, since it is smaller than the sum of its proper divisors (283195602).

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

196773678 is a wasteful number, since it uses less digits than its factorization.

196773678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 185 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 196773678 is about 14027.6041432598. The cubic root of 196773678 is about 581.6418776729.

The spelling of 196773678 in words is "one hundred ninety-six million, seven hundred seventy-three thousand, six hundred seventy-eight".