196700640 has 96 divisors (see below), whose sum is σ = 632862720. Its totient is φ = 51331584.

The previous prime is 196700563. The next prime is 196700641. The reversal of 196700640 is 46007691.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×196700640² = 77382283552819200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196700641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18201 + ... + 26919.

It is an arithmetic number, because the mean of its divisors is an integer number (6592320).

Almost surely, 2^196700640 is an apocalyptic number.

196700640 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 196700640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316431360).

196700640 is an abundant number, since it is smaller than the sum of its proper divisors (436162080).

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

196700640 is a wasteful number, since it uses less digits than its factorization.

196700640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8784 (or 8776 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 196700640 is about 14025.0005347593. Note that the first 3 decimals coincide. The cubic root of 196700640 is about 581.5699046037.

The spelling of 196700640 in words is "one hundred ninety-six million, seven hundred thousand, six hundred forty".