656543455 has 16 divisors (see below), whose sum is σ = 809694144. Its totient is φ = 510757120.

The previous prime is 656543453. The next prime is 656543467. The reversal of 656543455 is 554345656.

It is not a de Polignac number, because 656543455 - 2¹ = 656543453 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 (656543453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59934 + ... + 70036.

It is an arithmetic number, because the mean of its divisors is an integer number (50605884).

Almost surely, 2^656543455 is an apocalyptic number.

656543455 is a deficient number, since it is larger than the sum of its proper divisors (153150689).

656543455 is a wasteful number, since it uses less digits than its factorization.

656543455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10466.

The product of its digits is 1080000, while the sum is 43.

The square root of 656543455 is about 25623.1039298521. The cubic root of 656543455 is about 869.1361730172.

The spelling of 656543455 in words is "six hundred fifty-six million, five hundred forty-three thousand, four hundred fifty-five".