2657240648 has 16 divisors (see below), whose sum is σ = 5076333180. Its totient is φ = 1303551808.

The previous prime is 2657240647. The next prime is 2657240653. The reversal of 2657240648 is 8460427562.

It can be written as a sum of positive squares in 2 ways, for example, as 2591013604 + 66227044 = 50902^2 + 8138^2 .

It is a super-3 number, since 3×2657240648³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2657240599 and 2657240608.

It is not an unprimeable number, because it can be changed into a prime (2657240647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133115 + ... + 3133962.

Almost surely, 2^2657240648 is an apocalyptic number.

It is an amenable number.

2657240648 is a deficient number, since it is larger than the sum of its proper divisors (2419092532).

2657240648 is a wasteful number, since it uses less digits than its factorization.

2657240648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6267136 (or 6267132 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The square root of 2657240648 is about 51548.4301215857. The cubic root of 2657240648 is about 1385.0867106759.

The spelling of 2657240648 in words is "two billion, six hundred fifty-seven million, two hundred forty thousand, six hundred forty-eight".