620257741 has 4 divisors (see below), whose sum is σ = 620308800. Its totient is φ = 620206684.

The previous prime is 620257739. The next prime is 620257753. The reversal of 620257741 is 147752026.

620257741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 620257741 - 2¹ = 620257739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620257697 and 620257706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620257441) 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, 4350 + ... + 35488.

It is an arithmetic number, because the mean of its divisors is an integer number (155077200).

Almost surely, 2^620257741 is an apocalyptic number.

It is an amenable number.

620257741 is a deficient number, since it is larger than the sum of its proper divisors (51059).

620257741 is a wasteful number, since it uses less digits than its factorization.

620257741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51058.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 620257741 is about 24904.9742220304. The cubic root of 620257741 is about 852.8200412274.

The spelling of 620257741 in words is "six hundred twenty million, two hundred fifty-seven thousand, seven hundred forty-one".