1061646500 has 96 divisors (see below), whose sum is σ = 2416901760. Its totient is φ = 406896000.

The previous prime is 1061646463. The next prime is 1061646503. The reversal of 1061646500 is 56461601.

It is a super-2 number, since 2×1061646500² = 2254186581924500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1061646503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3059327 + ... + 3059673.

It is an arithmetic number, because the mean of its divisors is an integer number (25176060).

Almost surely, 2^1061646500 is an apocalyptic number.

1061646500 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 1061646500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208450880).

1061646500 is an abundant number, since it is smaller than the sum of its proper divisors (1355255260).

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

1061646500 is a wasteful number, since it uses less digits than its factorization.

1061646500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1061646500 is about 32582.9173033969. The cubic root of 1061646500 is about 1020.1404714906.

The spelling of 1061646500 in words is "one billion, sixty-one million, six hundred forty-six thousand, five hundred".