6972640 has 24 divisors (see below), whose sum is σ = 16473240. Its totient is φ = 2788992.

The previous prime is 6972631. The next prime is 6972643. The reversal of 6972640 is 462796.

It is a junction number, because it is equal to n+sod(n) for n = 6972596 and 6972605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6972643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21630 + ... + 21949.

It is an arithmetic number, because the mean of its divisors is an integer number (686385).

Almost surely, 2^6972640 is an apocalyptic number.

It is an amenable number.

6972640 is an abundant number, since it is smaller than the sum of its proper divisors (9500600).

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

6972640 is a wasteful number, since it uses less digits than its factorization.

6972640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43594 (or 43586 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6972640 is about 2640.5756948060. The cubic root of 6972640 is about 191.0435652568.

The spelling of 6972640 in words is "six million, nine hundred seventy-two thousand, six hundred forty".