1061651660 has 24 divisors (see below), whose sum is σ = 2230221840. Its totient is φ = 424517184.

The previous prime is 1061651627. The next prime is 1061651737. The reversal of 1061651660 is 661561601.

It is a super-2 number, since 2×1061651660² = 2254208494361511200, which contains 22 as substring.

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, 67682 + ... + 81878.

It is an arithmetic number, because the mean of its divisors is an integer number (92925910).

Almost surely, 2^1061651660 is an apocalyptic number.

1061651660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061651660 is an abundant number, since it is smaller than the sum of its proper divisors (1168570180).

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

1061651660 is a wasteful number, since it uses less digits than its factorization.

1061651660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17945 (or 17943 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1061651660 is about 32582.9964858974. The cubic root of 1061651660 is about 1020.1421242430.

The spelling of 1061651660 in words is "one billion, sixty-one million, six hundred fifty-one thousand, six hundred sixty".