656268493 has 8 divisors (see below), whose sum is σ = 731445120. Its totient is φ = 585155520.

The previous prime is 656268479. The next prime is 656268523. The reversal of 656268493 is 394862656.

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 656268493 - 2¹⁷ = 656137421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656268443) 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, 1015573 + ... + 1016218.

It is an arithmetic number, because the mean of its divisors is an integer number (91430640).

Almost surely, 2^656268493 is an apocalyptic number.

It is an amenable number.

656268493 is a deficient number, since it is larger than the sum of its proper divisors (75176627).

656268493 is a wasteful number, since it uses less digits than its factorization.

656268493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031827.

The product of its digits is 1866240, while the sum is 49.

The square root of 656268493 is about 25617.7378587572. The cubic root of 656268493 is about 869.0148239590.

The spelling of 656268493 in words is "six hundred fifty-six million, two hundred sixty-eight thousand, four hundred ninety-three".