150684993 has 6 divisors (see below), whose sum is σ = 217656114. Its totient is φ = 100456656.

The previous prime is 150684949. The next prime is 150685021. The reversal of 150684993 is 399486051.

It is a happy number.

150684993 is a `hidden beast` number, since 150 + 6 + 8 + 499 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 112529664 + 38155329 = 10608^2 + 6177^2 .

It is not a de Polignac number, because 150684993 - 2²⁴ = 133907777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (150684593) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 8371380 + ... + 8371397.

It is an arithmetic number, because the mean of its divisors is an integer number (36276019).

Almost surely, 2^150684993 is an apocalyptic number.

It is an amenable number.

150684993 is a deficient number, since it is larger than the sum of its proper divisors (66971121).

150684993 is a wasteful number, since it uses less digits than its factorization.

150684993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16742783 (or 16742780 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 150684993 is about 12275.3815826637. The cubic root of 150684993 is about 532.1368495344.

The spelling of 150684993 in words is "one hundred fifty million, six hundred eighty-four thousand, nine hundred ninety-three".