650406154066 has 8 divisors (see below), whose sum is σ = 975621766140. Its totient is φ = 325198898688.

The previous prime is 650406154063. The next prime is 650406154091. The reversal of 650406154066 is 660451604056.

It can be written as a sum of positive squares in 2 ways, for example, as 559023887041 + 91382267025 = 747679^2 + 302295^2 .

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

It is not an unprimeable number, because it can be changed into a prime (650406154063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890831 + ... + 2208178.

Almost surely, 2^650406154066 is an apocalyptic number.

650406154066 is a deficient number, since it is larger than the sum of its proper divisors (325215612074).

650406154066 is a wasteful number, since it uses less digits than its factorization.

650406154066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178348.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 650406154066 in words is "six hundred fifty billion, four hundred six million, one hundred fifty-four thousand, sixty-six".