16650434 has 4 divisors (see below), whose sum is σ = 24975654. Its totient is φ = 8325216.

The previous prime is 16650433. The next prime is 16650443. The reversal of 16650434 is 43405661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43405661 = 13 ⋅3338897.

It can be written as a sum of positive squares in only one way, i.e., 14100025 + 2550409 = 3755^2 + 1597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16650397 and 16650406.

It is not an unprimeable number, because it can be changed into a prime (16650433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4162607 + ... + 4162610.

Almost surely, 2^16650434 is an apocalyptic number.

16650434 is a deficient number, since it is larger than the sum of its proper divisors (8325220).

16650434 is an equidigital number, since it uses as much as digits as its factorization.

16650434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8325219.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 16650434 is about 4080.4943327984. The cubic root of 16650434 is about 255.3535222231.

The spelling of 16650434 in words is "sixteen million, six hundred fifty thousand, four hundred thirty-four".