1071680645 has 32 divisors (see below), whose sum is σ = 1538853120. Its totient is φ = 700922880.

The previous prime is 1071680639. The next prime is 1071680647. The reversal of 1071680645 is 5460861701.

1071680645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1071680645 - 2⁶ = 1071680581 is a prime.

It is a super-2 number, since 2×1071680645² = 2296998809735232050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1071680599 and 1071680608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071680647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77885 + ... + 90605.

It is an arithmetic number, because the mean of its divisors is an integer number (48089160).

Almost surely, 2^1071680645 is an apocalyptic number.

It is an amenable number.

1071680645 is a deficient number, since it is larger than the sum of its proper divisors (467172475).

1071680645 is a wasteful number, since it uses less digits than its factorization.

1071680645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12845.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1071680645 is about 32736.5337963566. The cubic root of 1071680645 is about 1023.3443491289.

The spelling of 1071680645 in words is "one billion, seventy-one million, six hundred eighty thousand, six hundred forty-five".