620634563506415 has 16 divisors (see below), whose sum is σ = 764962319813760. Its totient is φ = 483042953491200.

The previous prime is 620634563506361. The next prime is 620634563506547. The reversal of 620634563506415 is 514605365436026.

It is a de Polignac number, because none of the positive numbers 2^k-620634563506415 is a prime.

It is a super-2 number, since 2×620634563506415² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 156268295 + ... + 160190664.

It is an arithmetic number, because the mean of its divisors is an integer number (47810144988360).

Almost surely, 2^{620634563506415} is an apocalyptic number.

620634563506415 is a deficient number, since it is larger than the sum of its proper divisors (144327756307345).

620634563506415 is a wasteful number, since it uses less digits than its factorization.

620634563506415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316469602.

The product of its (nonzero) digits is 46656000, while the sum is 56.

The spelling of 620634563506415 in words is "six hundred twenty trillion, six hundred thirty-four billion, five hundred sixty-three million, five hundred six thousand, four hundred fifteen".