145664198 has 8 divisors (see below), whose sum is σ = 227996208. Its totient is φ = 69665464.

The previous prime is 145664179. The next prime is 145664201. The reversal of 145664198 is 891466541.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1583261 + ... + 1583352.

It is an arithmetic number, because the mean of its divisors is an integer number (28499526).

Almost surely, 2^145664198 is an apocalyptic number.

145664198 is a deficient number, since it is larger than the sum of its proper divisors (82332010).

145664198 is a wasteful number, since it uses less digits than its factorization.

145664198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166638.

The product of its digits is 207360, while the sum is 44.

The square root of 145664198 is about 12069.1423887532. The cubic root of 145664198 is about 526.1597316410.

The spelling of 145664198 in words is "one hundred forty-five million, six hundred sixty-four thousand, one hundred ninety-eight".