620455505 has 8 divisors (see below), whose sum is σ = 757166400. Its totient is φ = 487951216.

The previous prime is 620455499. The next prime is 620455513. The reversal of 620455505 is 505554026.

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 620455505 - 2⁶ = 620455441 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051325 + ... + 1051914.

It is an arithmetic number, because the mean of its divisors is an integer number (94645800).

Almost surely, 2^620455505 is an apocalyptic number.

It is an amenable number.

620455505 is a deficient number, since it is larger than the sum of its proper divisors (136710895).

620455505 is a wasteful number, since it uses less digits than its factorization.

620455505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103303.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 620455505 is about 24908.9442771066. The cubic root of 620455505 is about 852.9106697783.

The spelling of 620455505 in words is "six hundred twenty million, four hundred fifty-five thousand, five hundred five".