520140677 has 8 divisors (see below), whose sum is σ = 594942336. Its totient is φ = 445462992.

The previous prime is 520140629. The next prime is 520140679. The reversal of 520140677 is 776041025.

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

It is a cyclic number.

It is not a de Polignac number, because 520140677 - 2⁶ = 520140613 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 (520140679) 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, 21818 + ... + 38939.

It is an arithmetic number, because the mean of its divisors is an integer number (74367792).

Almost surely, 2^520140677 is an apocalyptic number.

It is an amenable number.

520140677 is a deficient number, since it is larger than the sum of its proper divisors (74801659).

520140677 is a wasteful number, since it uses less digits than its factorization.

520140677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61987.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 520140677 is about 22806.5928406678. The cubic root of 520140677 is about 804.2176610305.

The spelling of 520140677 in words is "five hundred twenty million, one hundred forty thousand, six hundred seventy-seven".