196663920 has 80 divisors (see below), whose sum is σ = 621201312. Its totient is φ = 51450880.

The previous prime is 196663891. The next prime is 196663949. The reversal of 196663920 is 29366691.

It is an interprime number because it is at equal distance from previous prime (196663891) and next prime (196663949).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4990 + ... + 20450.

Almost surely, 2^196663920 is an apocalyptic number.

196663920 is a gapful number since it is divisible by the number (10) 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 196663920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310600656).

196663920 is an abundant number, since it is smaller than the sum of its proper divisors (424537392).

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

196663920 is a wasteful number, since it uses less digits than its factorization.

196663920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15530 (or 15524 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 196663920 is about 14023.6913827993. The cubic root of 196663920 is about 581.5337132693.

The spelling of 196663920 in words is "one hundred ninety-six million, six hundred sixty-three thousand, nine hundred twenty".