520782623 has 4 divisors (see below), whose sum is σ = 520907040. Its totient is φ = 520658208.

The previous prime is 520782601. The next prime is 520782631. The reversal of 520782623 is 326287025.

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-520782623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520782643) 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, 55703 + ... + 64376.

It is an arithmetic number, because the mean of its divisors is an integer number (130226760).

Almost surely, 2^520782623 is an apocalyptic number.

520782623 is a deficient number, since it is larger than the sum of its proper divisors (124417).

520782623 is a wasteful number, since it uses less digits than its factorization.

520782623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124416.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 520782623 is about 22820.6621945990. The cubic root of 520782623 is about 804.5483741700.

The spelling of 520782623 in words is "five hundred twenty million, seven hundred eighty-two thousand, six hundred twenty-three".