196623917 has 12 divisors (see below), whose sum is σ = 236105856. Its totient is φ = 163096920.

The previous prime is 196623899. The next prime is 196623919. The reversal of 196623917 is 719326691.

It is a de Polignac number, because none of the positive numbers 2^k-196623917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196623919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63203 + ... + 66240.

It is an arithmetic number, because the mean of its divisors is an integer number (19675488).

Almost surely, 2^196623917 is an apocalyptic number.

It is an amenable number.

196623917 is a deficient number, since it is larger than the sum of its proper divisors (39481939).

196623917 is a wasteful number, since it uses less digits than its factorization.

196623917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129488 (or 129481 counting only the distinct ones).

The product of its digits is 122472, while the sum is 44.

The square root of 196623917 is about 14022.2650452771. The cubic root of 196623917 is about 581.4942810735.

The spelling of 196623917 in words is "one hundred ninety-six million, six hundred twenty-three thousand, nine hundred seventeen".