2665700736 has 128 divisors (see below), whose sum is σ = 7456803840. Its totient is φ = 842096640.

The previous prime is 2665700729. The next prime is 2665700743. The reversal of 2665700736 is 6370075662.

2665700736 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2665700729) and next prime (2665700743).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996681 + ... + 999351.

It is an arithmetic number, because the mean of its divisors is an integer number (58256280).

Almost surely, 2^2665700736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665700736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3728401920).

2665700736 is an abundant number, since it is smaller than the sum of its proper divisors (4791103104).

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

2665700736 is a wasteful number, since it uses less digits than its factorization.

2665700736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 42.

The square root of 2665700736 is about 51630.4245188823. The cubic root of 2665700736 is about 1386.5550937514. Note that the first 3 decimals are identical.

The spelling of 2665700736 in words is "two billion, six hundred sixty-five million, seven hundred thousand, seven hundred thirty-six".