196909691 has 8 divisors (see below), whose sum is σ = 227446704. Its totient is φ = 168478720.

The previous prime is 196909679. The next prime is 196909703.

196909691 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (196909679) and next prime (196909703).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196909691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196909621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526310 + ... + 526683.

It is an arithmetic number, because the mean of its divisors is an integer number (28430838).

Almost surely, 2^196909691 is an apocalyptic number.

196909691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196909691 is a deficient number, since it is larger than the sum of its proper divisors (30537013).

196909691 is a wasteful number, since it uses less digits than its factorization.

196909691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053021.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 196909691 is about 14032.4513539153. The cubic root of 196909691 is about 581.7758600852.

The spelling of 196909691 in words is "one hundred ninety-six million, nine hundred nine thousand, six hundred ninety-one".