656538106 has 8 divisors (see below), whose sum is σ = 1125493920. Its totient is φ = 281373468.

The previous prime is 656538067. The next prime is 656538107. The reversal of 656538106 is 601835656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (656538107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23447776 + ... + 23447803.

It is an arithmetic number, because the mean of its divisors is an integer number (140686740).

Almost surely, 2^656538106 is an apocalyptic number.

656538106 is a deficient number, since it is larger than the sum of its proper divisors (468955814).

656538106 is a wasteful number, since it uses less digits than its factorization.

656538106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46895588.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 656538106 is about 25622.9995511845. Note that the first 3 decimals coincide. The cubic root of 656538106 is about 869.1338126647.

The spelling of 656538106 in words is "six hundred fifty-six million, five hundred thirty-eight thousand, one hundred six".