506620487 has 4 divisors (see below), whose sum is σ = 507774960. Its totient is φ = 505466016.

The previous prime is 506620469. The next prime is 506620493. The reversal of 506620487 is 784026605.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506620487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 506620487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506620447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576578 + ... + 577455.

It is an arithmetic number, because the mean of its divisors is an integer number (126943740).

Almost surely, 2^506620487 is an apocalyptic number.

506620487 is a deficient number, since it is larger than the sum of its proper divisors (1154473).

506620487 is a wasteful number, since it uses less digits than its factorization.

506620487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154472.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 506620487 is about 22508.2315387060. The cubic root of 506620487 is about 797.1882998174.

The spelling of 506620487 in words is "five hundred six million, six hundred twenty thousand, four hundred eighty-seven".