6700667440 has 40 divisors (see below), whose sum is σ = 16000114320. Its totient is φ = 2607826176.

The previous prime is 6700667437. The next prime is 6700667443. The reversal of 6700667440 is 447660076.

It is an interprime number because it is at equal distance from previous prime (6700667437) and next prime (6700667443).

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 (40).

It is a junction number, because it is equal to n+sod(n) for n = 6700667393 and 6700667402.

It is not an unprimeable number, because it can be changed into a prime (6700667443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128910 + ... + 1134829.

It is an arithmetic number, because the mean of its divisors is an integer number (400002858).

Almost surely, 2^6700667440 is an apocalyptic number.

It is an amenable number.

6700667440 is an abundant number, since it is smaller than the sum of its proper divisors (9299446880).

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

6700667440 is a wasteful number, since it uses less digits than its factorization.

6700667440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263789 (or 2263783 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 6700667440 is about 81857.6046558901. The cubic root of 6700667440 is about 1885.2662289579.

The spelling of 6700667440 in words is "six billion, seven hundred million, six hundred sixty-seven thousand, four hundred forty".