6692336640 has 616 divisors, whose sum is σ = 26418876768. Its totient is φ = 1612431360.

The previous prime is 6692336633. The next prime is 6692336647. The reversal of 6692336640 is 466332966.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6692336633) and next prime (6692336647).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6692336647) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 41057199 + ... + 41057361.

Almost surely, 2^6692336640 is an apocalyptic number.

6692336640 is a gapful number since it is divisible by the number (60) 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 6692336640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13209438384).

6692336640 is an abundant number, since it is smaller than the sum of its proper divisors (19726540128).

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

6692336640 is a wasteful number, since it uses less digits than its factorization.

6692336640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The square root of 6692336640 is about 81806.7029038575. The cubic root of 6692336640 is about 1884.4846008874.

The spelling of 6692336640 in words is "six billion, six hundred ninety-two million, three hundred thirty-six thousand, six hundred forty".