648122068662 has 16 divisors (see below), whose sum is σ = 1296252894960. Its totient is φ = 216039229952.

The previous prime is 648122068597. The next prime is 648122068663. The reversal of 648122068662 is 266860221846.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648122068663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976498 + ... + 1499930.

It is an arithmetic number, because the mean of its divisors is an integer number (81015805935).

Almost surely, 2^648122068662 is an apocalyptic number.

648122068662 is an abundant number, since it is smaller than the sum of its proper divisors (648130826298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648122068662 is a wasteful number, since it uses less digits than its factorization.

648122068662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729807.

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 648122068662 in words is "six hundred forty-eight billion, one hundred twenty-two million, sixty-eight thousand, six hundred sixty-two".