2662899840 has 256 divisors, whose sum is σ = 9564825600. Its totient is φ = 700047360.

The previous prime is 2662899817. The next prime is 2662899851. The reversal of 2662899840 is 489982662.

It is a happy number.

2662899840 is a `hidden beast` number, since 2 + 6 + 628 + 9 + 9 + 8 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1260385 + ... + 1262495.

It is an arithmetic number, because the mean of its divisors is an integer number (37362600).

Almost surely, 2^2662899840 is an apocalyptic number.

2662899840 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 2662899840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4782412800).

2662899840 is an abundant number, since it is smaller than the sum of its proper divisors (6901925760).

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

2662899840 is a wasteful number, since it uses less digits than its factorization.

2662899840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 2662899840 is about 51603.2929181850. The cubic root of 2662899840 is about 1386.0692980850.

The spelling of 2662899840 in words is "two billion, six hundred sixty-two million, eight hundred ninety-nine thousand, eight hundred forty".