505675731 has 8 divisors (see below), whose sum is σ = 735528384. Its totient is φ = 306470120.

The previous prime is 505675669. The next prime is 505675771. The reversal of 505675731 is 137576505.

It is a happy number.

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

It is not a de Polignac number, because 505675731 - 2¹¹ = 505673683 is a prime.

It is a super-2 number, since 2×505675731² = 511415889844768722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505675731.

It is not an unprimeable number, because it can be changed into a prime (505675771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7661721 + ... + 7661786.

It is an arithmetic number, because the mean of its divisors is an integer number (91941048).

Almost surely, 2^505675731 is an apocalyptic number.

505675731 is a deficient number, since it is larger than the sum of its proper divisors (229852653).

505675731 is a wasteful number, since it uses less digits than its factorization.

505675731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15323521.

The product of its (nonzero) digits is 110250, while the sum is 39.

The square root of 505675731 is about 22487.2348455741. The cubic root of 505675731 is about 796.6924539153.

The spelling of 505675731 in words is "five hundred five million, six hundred seventy-five thousand, seven hundred thirty-one".