66105902 has 16 divisors (see below), whose sum is σ = 107201040. Its totient is φ = 30466368.

The previous prime is 66105889. The next prime is 66105917. The reversal of 66105902 is 20950166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22103 + ... + 24914.

It is an arithmetic number, because the mean of its divisors is an integer number (6700065).

Almost surely, 2^66105902 is an apocalyptic number.

66105902 is a deficient number, since it is larger than the sum of its proper divisors (41095138).

66105902 is a wasteful number, since it uses less digits than its factorization.

66105902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47075.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 66105902 is about 8130.5536096874. The cubic root of 66105902 is about 404.3400357482.

The spelling of 66105902 in words is "sixty-six million, one hundred five thousand, nine hundred two".