506991922 has 8 divisors (see below), whose sum is σ = 768017772. Its totient is φ = 250986000.

The previous prime is 506991913. The next prime is 506991931. The reversal of 506991922 is 229199605.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (506991913) and next prime (506991931).

It can be written as a sum of positive squares in 2 ways, for example, as 430936081 + 76055841 = 20759^2 + 8721^2 .

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

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, 1254729 + ... + 1255132.

Almost surely, 2^506991922 is an apocalyptic number.

506991922 is a deficient number, since it is larger than the sum of its proper divisors (261025850).

506991922 is a wasteful number, since it uses less digits than its factorization.

506991922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509964.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 506991922 is about 22516.4811193934. The cubic root of 506991922 is about 797.3830750052.

The spelling of 506991922 in words is "five hundred six million, nine hundred ninety-one thousand, nine hundred twenty-two".