2657380806 has 48 divisors (see below), whose sum is σ = 6245065008. Its totient is φ = 813350400.

The previous prime is 2657380783. The next prime is 2657380883. The reversal of 2657380806 is 6080837562.

2657380806 is a `hidden beast` number, since 265 + 7 + 380 + 8 + 0 + 6 = 666.

2657380806 is digitally balanced in base 2, because in such base 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 23 ways as a sum of consecutive naturals, for example, 93360 + ... + 118451.

It is an arithmetic number, because the mean of its divisors is an integer number (130105521).

Almost surely, 2^2657380806 is an apocalyptic number.

2657380806 is an abundant number, since it is smaller than the sum of its proper divisors (3587684202).

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

2657380806 is a wasteful number, since it uses less digits than its factorization.

2657380806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211877 (or 211874 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 2657380806 is about 51549.7895824998. The cubic root of 2657380806 is about 1385.1110627007. Note that the first 3 decimals are identical.

The spelling of 2657380806 in words is "two billion, six hundred fifty-seven million, three hundred eighty thousand, eight hundred six".