2657172660 has 48 divisors (see below), whose sum is σ = 7481678400. Its totient is φ = 704617984.

The previous prime is 2657172653. The next prime is 2657172689. The reversal of 2657172660 is 662717562.

2657172660 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112965 + ... + 134444.

It is an arithmetic number, because the mean of its divisors is an integer number (155868300).

Almost surely, 2^2657172660 is an apocalyptic number.

2657172660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2657172660 is an abundant number, since it is smaller than the sum of its proper divisors (4824505740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2657172660 is a wasteful number, since it uses less digits than its factorization.

2657172660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247600 (or 247598 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 2657172660 is about 51547.7706598452. The cubic root of 2657172660 is about 1385.0748976600.

The spelling of 2657172660 in words is "two billion, six hundred fifty-seven million, one hundred seventy-two thousand, six hundred sixty".