653647660066 has 8 divisors (see below), whose sum is σ = 980493641424. Its totient is φ = 326816446260.

The previous prime is 653647660021. The next prime is 653647660067. The reversal of 653647660066 is 660066746356.

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

It is a super-2 number, since 2×653647660066² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 653647659989 and 653647660016.

It is not an unprimeable number, because it can be changed into a prime (653647660067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3580560 + ... + 3758683.

It is an arithmetic number, because the mean of its divisors is an integer number (122561705178).

Almost surely, 2^653647660066 is an apocalyptic number.

653647660066 is a deficient number, since it is larger than the sum of its proper divisors (326845981358).

653647660066 is a wasteful number, since it uses less digits than its factorization.

653647660066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7383776.

The product of its (nonzero) digits is 19595520, while the sum is 55.

The spelling of 653647660066 in words is "six hundred fifty-three billion, six hundred forty-seven million, six hundred sixty thousand, sixty-six".