620505057 has 8 divisors (see below), whose sum is σ = 828033760. Its totient is φ = 413323200.

The previous prime is 620505013. The next prime is 620505071. The reversal of 620505057 is 750505026.

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

It is not a de Polignac number, because 620505057 - 2¹⁵ = 620472289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620505077) 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, 82507 + ... + 89712.

It is an arithmetic number, because the mean of its divisors is an integer number (103504220).

Almost surely, 2^620505057 is an apocalyptic number.

It is an amenable number.

620505057 is a deficient number, since it is larger than the sum of its proper divisors (207528703).

620505057 is a wasteful number, since it uses less digits than its factorization.

620505057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173423.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 620505057 is about 24909.9389200375. The cubic root of 620505057 is about 852.9333747663.

The spelling of 620505057 in words is "six hundred twenty million, five hundred five thousand, fifty-seven".