6906847440 has 40 divisors (see below), whose sum is σ = 21411227808. Its totient is φ = 1841825920.

The previous prime is 6906847417. The next prime is 6906847459. The reversal of 6906847440 is 447486096.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6906847440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14389026 + ... + 14389505.

Almost surely, 2^6906847440 is an apocalyptic number.

6906847440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6906847440 is an abundant number, since it is smaller than the sum of its proper divisors (14504380368).

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

6906847440 is a wasteful number, since it uses less digits than its factorization.

6906847440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28778547 (or 28778541 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 6906847440 is about 83107.4451538489. The cubic root of 6906847440 is about 1904.4078125702.

The spelling of 6906847440 in words is "six billion, nine hundred six million, eight hundred forty-seven thousand, four hundred forty".