196687764 has 180 divisors, whose sum is σ = 644814324. Its totient is φ = 51819264.

The previous prime is 196687763. The next prime is 196687781. The reversal of 196687764 is 467786691.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53406864 + 143280900 = 7308^2 + 11970^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 196687764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196687763) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 205912 + ... + 206864.

Almost surely, 2^196687764 is an apocalyptic number.

196687764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196687764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322407162).

196687764 is an abundant number, since it is smaller than the sum of its proper divisors (448126560).

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

196687764 is a wasteful number, since it uses less digits than its factorization.

196687764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 978 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 196687764 is about 14024.5414898313. The cubic root of 196687764 is about 581.5572144950.

The spelling of 196687764 in words is "one hundred ninety-six million, six hundred eighty-seven thousand, seven hundred sixty-four".