620346961 has 8 divisors (see below), whose sum is σ = 697112640. Its totient is φ = 547730832.

The previous prime is 620346953. The next prime is 620346971. The reversal of 620346961 is 169643026.

It is a happy number.

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

It is not a de Polignac number, because 620346961 - 2³ = 620346953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620346961.

It is not an unprimeable number, because it can be changed into a prime (620346901) 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 7 ways as a sum of consecutive naturals, for example, 1037071 + ... + 1037668.

It is an arithmetic number, because the mean of its divisors is an integer number (87139080).

Almost surely, 2^620346961 is an apocalyptic number.

It is an amenable number.

620346961 is a deficient number, since it is larger than the sum of its proper divisors (76765679).

620346961 is a wasteful number, since it uses less digits than its factorization.

620346961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074775.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 620346961 is about 24906.7653660607. The cubic root of 620346961 is about 852.8609301198.

Adding to 620346961 its reverse (169643026), we get a palindrome (789989987).

The spelling of 620346961 in words is "six hundred twenty million, three hundred forty-six thousand, nine hundred sixty-one".