6980640 has 48 divisors (see below), whose sum is σ = 21990528. Its totient is φ = 1861376.

The previous prime is 6980639. The next prime is 6980641. The reversal of 6980640 is 460896.

It is an interprime number because it is at equal distance from previous prime (6980639) and next prime (6980641).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (6980641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6792 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (458136).

Almost surely, 2^6980640 is an apocalyptic number.

6980640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6980640 is an abundant number, since it is smaller than the sum of its proper divisors (15009888).

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

6980640 is a wasteful number, since it uses less digits than its factorization.

6980640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14561 (or 14553 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 6980640 is about 2642.0900817345. The cubic root of 6980640 is about 191.1166014087.

The spelling of 6980640 in words is "six million, nine hundred eighty thousand, six hundred forty".