620412506665 has 32 divisors (see below), whose sum is σ = 854998550784. Its totient is φ = 423356778240.

The previous prime is 620412506663. The next prime is 620412506737. The reversal of 620412506665 is 566605214026.

It is a happy number.

It is not a de Polignac number, because 620412506665 - 2¹ = 620412506663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620412506663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6465135 + ... + 6560395.

It is an arithmetic number, because the mean of its divisors is an integer number (26718704712).

Almost surely, 2^620412506665 is an apocalyptic number.

It is an amenable number.

620412506665 is a deficient number, since it is larger than the sum of its proper divisors (234586044119).

620412506665 is a wasteful number, since it uses less digits than its factorization.

620412506665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96177.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 620412506665 in words is "six hundred twenty billion, four hundred twelve million, five hundred six thousand, six hundred sixty-five".