520967906 has 4 divisors (see below), whose sum is σ = 781451862. Its totient is φ = 260483952.

The previous prime is 520967893. The next prime is 520967911. The reversal of 520967906 is 609769025.

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

It can be written as a sum of positive squares in only one way, i.e., 468332881 + 52635025 = 21641^2 + 7255^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130241975 + ... + 130241978.

Almost surely, 2^520967906 is an apocalyptic number.

520967906 is a deficient number, since it is larger than the sum of its proper divisors (260483956).

520967906 is a wasteful number, since it uses less digits than its factorization.

520967906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260483955.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 520967906 is about 22824.7213783652. The cubic root of 520967906 is about 804.6437763940.

The spelling of 520967906 in words is "five hundred twenty million, nine hundred sixty-seven thousand, nine hundred six".