220264690657 has 8 divisors (see below), whose sum is σ = 240293702880. Its totient is φ = 200236503360.

The previous prime is 220264690651. The next prime is 220264690703. The reversal of 220264690657 is 756096462022.

It is a happy number.

220264690657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220264690657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220264690657.

It is not an unprimeable number, because it can be changed into a prime (220264690651) 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 7 ways as a sum of consecutive naturals, for example, 440178 + ... + 796420.

It is an arithmetic number, because the mean of its divisors is an integer number (30036712860).

Almost surely, 2^220264690657 is an apocalyptic number.

It is an amenable number.

220264690657 is a deficient number, since it is larger than the sum of its proper divisors (20029012223).

220264690657 is a wasteful number, since it uses less digits than its factorization.

220264690657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412463.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 220264690657 in words is "two hundred twenty billion, two hundred sixty-four million, six hundred ninety thousand, six hundred fifty-seven".