620654930837 has 2 divisors, whose sum is σ = 620654930838. Its totient is φ = 620654930836.

The previous prime is 620654930689. The next prime is 620654930849. The reversal of 620654930837 is 738039456026.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561913652881 + 58741277956 = 749609^2 + 242366^2 .

It is a cyclic number.

It is not a de Polignac number, because 620654930837 - 2¹⁰ = 620654929813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620654930887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310327465418 + 310327465419.

It is an arithmetic number, because the mean of its divisors is an integer number (310327465419).

Almost surely, 2^620654930837 is an apocalyptic number.

It is an amenable number.

620654930837 is a deficient number, since it is larger than the sum of its proper divisors (1).

620654930837 is an equidigital number, since it uses as much as digits as its factorization.

620654930837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 620654930837 in words is "six hundred twenty billion, six hundred fifty-four million, nine hundred thirty thousand, eight hundred thirty-seven".