620617337 has 2 divisors, whose sum is σ = 620617338. Its totient is φ = 620617336.

The previous prime is 620617279. The next prime is 620617343. The reversal of 620617337 is 733716026.

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., 565916521 + 54700816 = 23789^2 + 7396^2 .

It is a cyclic number.

It is not a de Polignac number, because 620617337 - 2²² = 616423033 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 620617297 and 620617306.

It is not a weakly prime, because it can be changed into another prime (620617037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310308668 + 310308669.

It is an arithmetic number, because the mean of its divisors is an integer number (310308669).

Almost surely, 2^620617337 is an apocalyptic number.

It is an amenable number.

620617337 is a deficient number, since it is larger than the sum of its proper divisors (1).

620617337 is an equidigital number, since it uses as much as digits as its factorization.

620617337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 620617337 is about 24912.1925369888. The cubic root of 620617337 is about 852.9848175830.

The spelling of 620617337 in words is "six hundred twenty million, six hundred seventeen thousand, three hundred thirty-seven".