620065507 has 4 divisors (see below), whose sum is σ = 628798896. Its totient is φ = 611332120.

The previous prime is 620065471. The next prime is 620065541. The reversal of 620065507 is 705560026.

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

It is a cyclic number.

It is not a de Polignac number, because 620065507 - 2¹⁵ = 620032739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620065307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4366588 + ... + 4366729.

It is an arithmetic number, because the mean of its divisors is an integer number (157199724).

Almost surely, 2^620065507 is an apocalyptic number.

620065507 is a deficient number, since it is larger than the sum of its proper divisors (8733389).

620065507 is an equidigital number, since it uses as much as digits as its factorization.

620065507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733388.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 620065507 is about 24901.1145734483. The cubic root of 620065507 is about 852.7319284228.

The spelling of 620065507 in words is "six hundred twenty million, sixty-five thousand, five hundred seven".