2068377840 has 120 divisors (see below), whose sum is σ = 7115825808. Its totient is φ = 538106880.

The previous prime is 2068377827. The next prime is 2068377859. The reversal of 2068377840 is 487738602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5514 + ... + 64553.

Almost surely, 2^2068377840 is an apocalyptic number.

2068377840 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 2068377840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3557912904).

2068377840 is an abundant number, since it is smaller than the sum of its proper divisors (5047447968).

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

2068377840 is a wasteful number, since it uses less digits than its factorization.

2068377840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70127 (or 70118 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 2068377840 is about 45479.4221599176. The cubic root of 2068377840 is about 1274.1189022087.

The spelling of 2068377840 in words is "two billion, sixty-eight million, three hundred seventy-seven thousand, eight hundred forty".