1026646620 has 24 divisors (see below), whose sum is σ = 2874610704. Its totient is φ = 273772416.

The previous prime is 1026646613. The next prime is 1026646631. The reversal of 1026646620 is 266466201.

1026646620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8555329 + ... + 8555448.

It is an arithmetic number, because the mean of its divisors is an integer number (119775446).

Almost surely, 2^1026646620 is an apocalyptic number.

1026646620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026646620 is an abundant number, since it is smaller than the sum of its proper divisors (1847964084).

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

1026646620 is a wasteful number, since it uses less digits than its factorization.

1026646620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17110789 (or 17110787 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1026646620 is about 32041.3267515563. The cubic root of 1026646620 is about 1008.8044606366.

The spelling of 1026646620 in words is "one billion, twenty-six million, six hundred forty-six thousand, six hundred twenty".