661834106 has 16 divisors (see below), whose sum is σ = 1106472960. Its totient is φ = 295058880.

The previous prime is 661834099. The next prime is 661834127. The reversal of 661834106 is 601438166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511610 + ... + 512901.

It is an arithmetic number, because the mean of its divisors is an integer number (69154560).

Almost surely, 2^661834106 is an apocalyptic number.

661834106 is a deficient number, since it is larger than the sum of its proper divisors (444638854).

661834106 is a wasteful number, since it uses less digits than its factorization.

661834106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024549.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 661834106 is about 25726.1366318381. The cubic root of 661834106 is about 871.4645284788.

The spelling of 661834106 in words is "six hundred sixty-one million, eight hundred thirty-four thousand, one hundred six".