1055436660 has 72 divisors (see below), whose sum is σ = 3220753536. Its totient is φ = 279756480.

The previous prime is 1055436631. The next prime is 1055436703. The reversal of 1055436660 is 666345501.

It is a super-2 number, since 2×1055436660² = 2227893086543911200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12505 + ... + 47615.

It is an arithmetic number, because the mean of its divisors is an integer number (44732688).

Almost surely, 2^1055436660 is an apocalyptic number.

1055436660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055436660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1610376768).

1055436660 is an abundant number, since it is smaller than the sum of its proper divisors (2165316876).

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

1055436660 is a wasteful number, since it uses less digits than its factorization.

1055436660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35293 (or 35288 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1055436660 is about 32487.4846671761. The cubic root of 1055436660 is about 1018.1475605115.

The spelling of 1055436660 in words is "one billion, fifty-five million, four hundred thirty-six thousand, six hundred sixty".