662620062665 has 36 divisors (see below), whose sum is σ = 928437653388. Its totient is φ = 453557998080.

The previous prime is 662620062653. The next prime is 662620062677. The reversal of 662620062665 is 566260026266.

It is an interprime number because it is at equal distance from previous prime (662620062653) and next prime (662620062677).

It can be written as a sum of positive squares in 6 ways, for example, as 26561176576 + 636058886089 = 162976^2 + 797533^2 .

It is not a de Polignac number, because 662620062665 - 2⁸ = 662620062409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1720034 + ... + 2069723.

Almost surely, 2^662620062665 is an apocalyptic number.

It is an amenable number.

662620062665 is a deficient number, since it is larger than the sum of its proper divisors (265817590723).

662620062665 is a wasteful number, since it uses less digits than its factorization.

662620062665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789818 (or 3789790 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 662620062665 in words is "six hundred sixty-two billion, six hundred twenty million, sixty-two thousand, six hundred sixty-five".