1060645640 has 32 divisors (see below), whose sum is σ = 2526833880. Its totient is φ = 399301632.

The previous prime is 1060645639. The next prime is 1060645669. The reversal of 1060645640 is 465460601.

It can be written as a sum of positive squares in 4 ways, for example, as 864477604 + 196168036 = 29402^2 + 14006^2 .

It is a super-2 number, since 2×1060645640² = 2249938347302019200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1060645597 and 1060645606.

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, 779207 + ... + 780566.

Almost surely, 2^1060645640 is an apocalyptic number.

1060645640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1060645640 is an abundant number, since it is smaller than the sum of its proper divisors (1466188240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1060645640 is a wasteful number, since it uses less digits than its factorization.

1060645640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559801 (or 1559797 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1060645640 is about 32567.5550202959. Note that the first 3 decimals coincide. The cubic root of 1060645640 is about 1019.8197938724.

The spelling of 1060645640 in words is "one billion, sixty million, six hundred forty-five thousand, six hundred forty".