650189998 has 8 divisors (see below), whose sum is σ = 976250808. Its totient is φ = 324773064.

The previous prime is 650189993. The next prime is 650190031. The reversal of 650189998 is 899981056.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650189993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158436 + ... + 162487.

It is an arithmetic number, because the mean of its divisors is an integer number (122031351).

Almost surely, 2^650189998 is an apocalyptic number.

650189998 is a deficient number, since it is larger than the sum of its proper divisors (326060810).

650189998 is a wasteful number, since it uses less digits than its factorization.

650189998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321938.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The square root of 650189998 is about 25498.8234630541. The cubic root of 650189998 is about 866.3234990147.

The spelling of 650189998 in words is "six hundred fifty million, one hundred eighty-nine thousand, nine hundred ninety-eight".