661076105 has 8 divisors (see below), whose sum is σ = 793433664. Its totient is φ = 528766000.

The previous prime is 661076089. The next prime is 661076111. The reversal of 661076105 is 501670166.

661076105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 661076105 - 2⁴ = 661076089 is a prime.

It is a Duffinian number.

It is a Curzon 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, 37370 + ... + 52140.

It is an arithmetic number, because the mean of its divisors is an integer number (99179208).

Almost surely, 2^661076105 is an apocalyptic number.

It is an amenable number.

661076105 is a deficient number, since it is larger than the sum of its proper divisors (132357559).

661076105 is a wasteful number, since it uses less digits than its factorization.

661076105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23727.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 661076105 is about 25711.4002924773. The cubic root of 661076105 is about 871.1317042240.

The spelling of 661076105 in words is "six hundred sixty-one million, seventy-six thousand, one hundred five".