2645994708 has 216 divisors, whose sum is σ = 8302775040. Its totient is φ = 725850720.

The previous prime is 2645994697. The next prime is 2645994709. The reversal of 2645994708 is 8074995462.

2645994708 is a `hidden beast` number, since 2 + 6 + 4 + 599 + 47 + 0 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645994709) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20834541 + ... + 20834667.

Almost surely, 2^2645994708 is an apocalyptic number.

2645994708 is a gapful number since it is divisible by the number (28) 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 2645994708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4151387520).

2645994708 is an abundant number, since it is smaller than the sum of its proper divisors (5656780332).

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

2645994708 is a wasteful number, since it uses less digits than its factorization.

2645994708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 2645994708 is about 51439.2331591364. The cubic root of 2645994708 is about 1383.1299655297.

The spelling of 2645994708 in words is "two billion, six hundred forty-five million, nine hundred ninety-four thousand, seven hundred eight".