1061606840 has 32 divisors (see below), whose sum is σ = 2729846880. Its totient is φ = 363979392.

The previous prime is 1061606827. The next prime is 1061606867. The reversal of 1061606840 is 486061601.

It is a happy number.

It is a super-2 number, since 2×1061606840² = 2254018165469571200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1061606797 and 1061606806.

It is a congruent 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, 1895447 + ... + 1896006.

It is an arithmetic number, because the mean of its divisors is an integer number (85307715).

Almost surely, 2^1061606840 is an apocalyptic number.

1061606840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061606840 is an abundant number, since it is smaller than the sum of its proper divisors (1668240040).

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

1061606840 is a wasteful number, since it uses less digits than its factorization.

1061606840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791471 (or 3791467 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1061606840 is about 32582.3086965918. The cubic root of 1061606840 is about 1020.1277681803.

The spelling of 1061606840 in words is "one billion, sixty-one million, six hundred six thousand, eight hundred forty".