2694512640 has 136 divisors (see below), whose sum is σ = 8625520368. Its totient is φ = 718274560.

The previous prime is 2694512599. The next prime is 2694512659. The reversal of 2694512640 is 462154962.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981670 + ... + 984410.

Almost surely, 2^2694512640 is an apocalyptic number.

2694512640 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 2694512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4312760184).

2694512640 is an abundant number, since it is smaller than the sum of its proper divisors (5931007728).

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

2694512640 is an frugal number, since it uses more digits than its factorization.

2694512640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781 (or 2751 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 2694512640 is about 51908.6952253666. The cubic root of 2694512640 is about 1391.5326744114.

The spelling of 2694512640 in words is "two billion, six hundred ninety-four million, five hundred twelve thousand, six hundred forty".