655948957 has 4 divisors (see below), whose sum is σ = 663319260. Its totient is φ = 648578656.

The previous prime is 655948897. The next prime is 655948981. The reversal of 655948957 is 759849556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86601636 + 569347321 = 9306^2 + 23861^2 .

It is a cyclic number.

It is not a de Polignac number, because 655948957 - 2¹¹ = 655946909 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 (655928957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3685018 + ... + 3685195.

It is an arithmetic number, because the mean of its divisors is an integer number (165829815).

Almost surely, 2^655948957 is an apocalyptic number.

It is an amenable number.

655948957 is a deficient number, since it is larger than the sum of its proper divisors (7370303).

655948957 is an equidigital number, since it uses as much as digits as its factorization.

655948957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370302.

The product of its digits is 13608000, while the sum is 58.

The square root of 655948957 is about 25611.5004831814. The cubic root of 655948957 is about 868.8737604545.

The spelling of 655948957 in words is "six hundred fifty-five million, nine hundred forty-eight thousand, nine hundred fifty-seven".