6698723544 has 64 divisors (see below), whose sum is σ = 18667584000. Its totient is φ = 2225705760.

The previous prime is 6698723519. The next prime is 6698723557. The reversal of 6698723544 is 4453278966.

6698723544 is a `hidden beast` number, since 6 + 6 + 98 + 7 + 2 + 3 + 544 = 666.

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

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, 17317 + ... + 117035.

It is an arithmetic number, because the mean of its divisors is an integer number (291681000).

Almost surely, 2^6698723544 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 6698723544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9333792000).

6698723544 is an abundant number, since it is smaller than the sum of its proper divisors (11968860456).

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

6698723544 is a wasteful number, since it uses less digits than its factorization.

6698723544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100045 (or 100035 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 6698723544 is about 81845.7301513036. The cubic root of 6698723544 is about 1885.0839030449.

The spelling of 6698723544 in words is "six billion, six hundred ninety-eight million, seven hundred twenty-three thousand, five hundred forty-four".