2069645340 has 288 divisors, whose sum is σ = 7119028224. Its totient is φ = 447068160.

The previous prime is 2069645327. The next prime is 2069645351. The reversal of 2069645340 is 435469602.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8587620 + ... + 8587860.

It is an arithmetic number, because the mean of its divisors is an integer number (24718848).

Almost surely, 2^2069645340 is an apocalyptic number.

2069645340 is a gapful number since it is divisible by the number (20) 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 2069645340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3559514112).

2069645340 is an abundant number, since it is smaller than the sum of its proper divisors (5049382884).

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

2069645340 is a wasteful number, since it uses less digits than its factorization.

2069645340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 2069645340 is about 45493.3548993696. The cubic root of 2069645340 is about 1274.3791086872.

The spelling of 2069645340 in words is "two billion, sixty-nine million, six hundred forty-five thousand, three hundred forty".