520465766 has 4 divisors (see below), whose sum is σ = 780698652. Its totient is φ = 260232882.

The previous prime is 520465763. The next prime is 520465793. The reversal of 520465766 is 667564025.

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

It is a super-2 number, since 2×520465766² = 541769227155933512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520465763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130116440 + ... + 130116443.

It is an arithmetic number, because the mean of its divisors is an integer number (195174663).

Almost surely, 2^520465766 is an apocalyptic number.

520465766 is a deficient number, since it is larger than the sum of its proper divisors (260232886).

520465766 is a wasteful number, since it uses less digits than its factorization.

520465766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260232885.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 520465766 is about 22813.7188112767. The cubic root of 520465766 is about 804.3851720381.

The spelling of 520465766 in words is "five hundred twenty million, four hundred sixty-five thousand, seven hundred sixty-six".