197896906 has 4 divisors (see below), whose sum is σ = 296845362. Its totient is φ = 98948452.

The previous prime is 197896903. The next prime is 197896927. The reversal of 197896906 is 609698791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609698791 = 13 ⋅46899907.

It can be written as a sum of positive squares in only one way, i.e., 147841281 + 50055625 = 12159^2 + 7075^2 .

It is not an unprimeable number, because it can be changed into a prime (197896903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49474225 + ... + 49474228.

Almost surely, 2^197896906 is an apocalyptic number.

197896906 is a deficient number, since it is larger than the sum of its proper divisors (98948456).

197896906 is an equidigital number, since it uses as much as digits as its factorization.

197896906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98948455.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 197896906 is about 14067.5835167238. The cubic root of 197896906 is about 582.7464923498.

The spelling of 197896906 in words is "one hundred ninety-seven million, eight hundred ninety-six thousand, nine hundred six".