1655056657 has 12 divisors (see below), whose sum is σ = 1724402316. Its totient is φ = 1588170240.

The previous prime is 1655056649. The next prime is 1655056681. The reversal of 1655056657 is 7566505561.

It can be written as a sum of positive squares in 6 ways, for example, as 65918161 + 1589138496 = 8119^2 + 39864^2 .

It is not a de Polignac number, because 1655056657 - 2³ = 1655056649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655056957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91657 + ... + 108217.

It is an arithmetic number, because the mean of its divisors is an integer number (143700193).

Almost surely, 2^1655056657 is an apocalyptic number.

It is an amenable number.

1655056657 is a deficient number, since it is larger than the sum of its proper divisors (69345659).

1655056657 is an equidigital number, since it uses as much as digits as its factorization.

1655056657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16708 (or 16671 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 46.

The square root of 1655056657 is about 40682.3875528465. The cubic root of 1655056657 is about 1182.8716463732.

The spelling of 1655056657 in words is "one billion, six hundred fifty-five million, fifty-six thousand, six hundred fifty-seven".