620261771 has 4 divisors (see below), whose sum is σ = 622243752. Its totient is φ = 618279792.

The previous prime is 620261767. The next prime is 620261791. The reversal of 620261771 is 177162026.

620261771 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 an emirpimes, since its reverse is a distinct semiprime: 177162026 = 2 ⋅88581013.

It is a cyclic number.

It is not a de Polignac number, because 620261771 - 2² = 620261767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620261731) 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, 990521 + ... + 991146.

It is an arithmetic number, because the mean of its divisors is an integer number (155560938).

Almost surely, 2^620261771 is an apocalyptic number.

620261771 is a deficient number, since it is larger than the sum of its proper divisors (1981981).

620261771 is a wasteful number, since it uses less digits than its factorization.

620261771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981980.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 620261771 is about 24905.0551294311. The cubic root of 620261771 is about 852.8218882323.

The spelling of 620261771 in words is "six hundred twenty million, two hundred sixty-one thousand, seven hundred seventy-one".