2660371956 has 144 divisors (see below), whose sum is σ = 8036159040. Its totient is φ = 732533760.

The previous prime is 2660371943. The next prime is 2660371969. The reversal of 2660371956 is 6591730662.

2660371956 is a `hidden beast` number, since 26 + 603 + 7 + 19 + 5 + 6 = 666.

2660371956 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 (2660371943) and next prime (2660371969).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188415 + ... + 202041.

It is an arithmetic number, because the mean of its divisors is an integer number (55806660).

Almost surely, 2^2660371956 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 2660371956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4018079520).

2660371956 is an abundant number, since it is smaller than the sum of its proper divisors (5375787084).

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

2660371956 is a wasteful number, since it uses less digits than its factorization.

2660371956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13694 (or 13689 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 2660371956 is about 51578.7936656142. The cubic root of 2660371956 is about 1385.6305618800.

The spelling of 2660371956 in words is "two billion, six hundred sixty million, three hundred seventy-one thousand, nine hundred fifty-six".