6709651956 has 192 divisors, whose sum is σ = 20220928000. Its totient is φ = 1884529152.

The previous prime is 6709651951. The next prime is 6709651957. The reversal of 6709651956 is 6591569076.

6709651956 is a `hidden beast` number, since 6 + 70 + 9 + 6 + 519 + 56 = 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 (6709651951) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15495516 + ... + 15495948.

Almost surely, 2^6709651956 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 6709651956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10110464000).

6709651956 is an abundant number, since it is smaller than the sum of its proper divisors (13511276044).

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

6709651956 is a wasteful number, since it uses less digits than its factorization.

6709651956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 54.

The square root of 6709651956 is about 81912.4652052421. The cubic root of 6709651956 is about 1886.1084654424.

The spelling of 6709651956 in words is "six billion, seven hundred nine million, six hundred fifty-one thousand, nine hundred fifty-six".