620550979339 has 2 divisors, whose sum is σ = 620550979340. Its totient is φ = 620550979338.

The previous prime is 620550979333. The next prime is 620550979351. The reversal of 620550979339 is 933979055026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620550979339 - 2¹⁵ = 620550946571 is a prime.

It is not a weakly prime, because it can be changed into another prime (620550979333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310275489669 + 310275489670.

It is an arithmetic number, because the mean of its divisors is an integer number (310275489670).

Almost surely, 2^620550979339 is an apocalyptic number.

620550979339 is a deficient number, since it is larger than the sum of its proper divisors (1).

620550979339 is an equidigital number, since it uses as much as digits as its factorization.

620550979339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13778100, while the sum is 58.

The spelling of 620550979339 in words is "six hundred twenty billion, five hundred fifty million, nine hundred seventy-nine thousand, three hundred thirty-nine".