520718998 has 8 divisors (see below), whose sum is σ = 781449408. Its totient is φ = 260235864.

The previous prime is 520718987. The next prime is 520718999. The reversal of 520718998 is 899817025.

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

It is a super-2 number, since 2×520718998² = 542296549756248008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520718999) 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, 56461 + ... + 65032.

It is an arithmetic number, because the mean of its divisors is an integer number (97681176).

Almost surely, 2^520718998 is an apocalyptic number.

520718998 is a deficient number, since it is larger than the sum of its proper divisors (260730410).

520718998 is a wasteful number, since it uses less digits than its factorization.

520718998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123638.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 520718998 is about 22819.2681302447. The cubic root of 520718998 is about 804.5156084357.

The spelling of 520718998 in words is "five hundred twenty million, seven hundred eighteen thousand, nine hundred ninety-eight".