656663093 has 8 divisors (see below), whose sum is σ = 680241240. Its totient is φ = 633445120.

The previous prime is 656663071. The next prime is 656663099. The reversal of 656663093 is 390366656.

656663093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 32512804 + 624150289 = 5702^2 + 24983^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 656663093 - 2¹⁸ = 656400949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656663099) 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, 86330 + ... + 93627.

It is an arithmetic number, because the mean of its divisors is an integer number (85030155).

Almost surely, 2^656663093 is an apocalyptic number.

It is an amenable number.

656663093 is a deficient number, since it is larger than the sum of its proper divisors (23578147).

656663093 is a wasteful number, since it uses less digits than its factorization.

656663093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180087.

The product of its (nonzero) digits is 524880, while the sum is 44.

The square root of 656663093 is about 25625.4383962499. The cubic root of 656663093 is about 869.1889623121.

The spelling of 656663093 in words is "six hundred fifty-six million, six hundred sixty-three thousand, ninety-three".