1061655988 has 24 divisors (see below), whose sum is σ = 1962047808. Its totient is φ = 501627456.

The previous prime is 1061655953. The next prime is 1061655997. The reversal of 1061655988 is 8895561601.

It is a super-2 number, since 2×1061655988² = 2254226873712512288, which contains 22 as substring.

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, 61881 + ... + 77152.

It is an arithmetic number, because the mean of its divisors is an integer number (81751992).

Almost surely, 2^1061655988 is an apocalyptic number.

It is an amenable number.

1061655988 is a deficient number, since it is larger than the sum of its proper divisors (900391820).

1061655988 is a wasteful number, since it uses less digits than its factorization.

1061655988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139143 (or 139141 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 49.

The square root of 1061655988 is about 32583.0629008385. The cubic root of 1061655988 is about 1020.1435105009.

The spelling of 1061655988 in words is "one billion, sixty-one million, six hundred fifty-five thousand, nine hundred eighty-eight".