1056661107 has 4 divisors (see below), whose sum is σ = 1408881480. Its totient is φ = 704440736.

The previous prime is 1056661051. The next prime is 1056661127. The reversal of 1056661107 is 7011666501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1056661107 - 2⁶ = 1056661043 is a prime.

It is a super-3 number, since 3×1056661107³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1056661127) 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, 176110182 + ... + 176110187.

It is an arithmetic number, because the mean of its divisors is an integer number (352220370).

Almost surely, 2^1056661107 is an apocalyptic number.

1056661107 is a deficient number, since it is larger than the sum of its proper divisors (352220373).

1056661107 is an equidigital number, since it uses as much as digits as its factorization.

1056661107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352220372.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1056661107 is about 32506.3241077794. The cubic root of 1056661107 is about 1018.5411372441.

The spelling of 1056661107 in words is "one billion, fifty-six million, six hundred sixty-one thousand, one hundred seven".