1061657020 has 12 divisors (see below), whose sum is σ = 2229479784. Its totient is φ = 424662800.

The previous prime is 1061657017. The next prime is 1061657029. The reversal of 1061657020 is 207561601.

It is a super-2 number, since 2×1061657020² = 2254231256230560800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061657020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061657029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26541406 + ... + 26541445.

It is an arithmetic number, because the mean of its divisors is an integer number (185789982).

Almost surely, 2^1061657020 is an apocalyptic number.

1061657020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061657020 is an abundant number, since it is smaller than the sum of its proper divisors (1167822764).

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

1061657020 is a wasteful number, since it uses less digits than its factorization.

1061657020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53082860 (or 53082858 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1061657020 is about 32583.0787372833. The cubic root of 1061657020 is about 1020.1438410499.

The spelling of 1061657020 in words is "one billion, sixty-one million, six hundred fifty-seven thousand, twenty".