506369645 has 4 divisors (see below), whose sum is σ = 607643580. Its totient is φ = 405095712.

The previous prime is 506369621. The next prime is 506369663. The reversal of 506369645 is 546963605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71605444 + 434764201 = 8462^2 + 20851^2 .

It is a cyclic number.

It is not a de Polignac number, because 506369645 - 2⁸ = 506369389 is a prime.

It is a super-3 number, since 3×506369645³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 506369596 and 506369605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50636960 + ... + 50636969.

It is an arithmetic number, because the mean of its divisors is an integer number (151910895).

Almost surely, 2^506369645 is an apocalyptic number.

It is an amenable number.

506369645 is a deficient number, since it is larger than the sum of its proper divisors (101273935).

506369645 is a wasteful number, since it uses less digits than its factorization.

506369645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101273934.

The product of its (nonzero) digits is 583200, while the sum is 44.

The square root of 506369645 is about 22502.6586207052. The cubic root of 506369645 is about 797.0567080078.

The spelling of 506369645 in words is "five hundred six million, three hundred sixty-nine thousand, six hundred forty-five".