620242665660249 has 8 divisors (see below), whose sum is σ = 875636704461600. Its totient is φ = 389171868649536.

The previous prime is 620242665660169. The next prime is 620242665660263. The reversal of 620242665660249 is 942066566242026.

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

It is not a de Polignac number, because 620242665660249 - 2¹² = 620242665656153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 620242665660192 and 620242665660201.

It is not an unprimeable number, because it can be changed into a prime (620242665660269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6080810447599 + ... + 6080810447700.

It is an arithmetic number, because the mean of its divisors is an integer number (109454588057700).

Almost surely, 2^{620242665660249} is an apocalyptic number.

It is an amenable number.

620242665660249 is a deficient number, since it is larger than the sum of its proper divisors (255394038801351).

620242665660249 is a wasteful number, since it uses less digits than its factorization.

620242665660249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12161620895319.

The product of its (nonzero) digits is 89579520, while the sum is 60.

The spelling of 620242665660249 in words is "six hundred twenty trillion, two hundred forty-two billion, six hundred sixty-five million, six hundred sixty thousand, two hundred forty-nine".