6958640 has 40 divisors (see below), whose sum is σ = 17425968. Its totient is φ = 2568960.

The previous prime is 6958621. The next prime is 6958649. The reversal of 6958640 is 468596.

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

It is a junction number, because it is equal to n+sod(n) for n = 6958594 and 6958603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6958649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2306 + ... + 4385.

Almost surely, 2^6958640 is an apocalyptic number.

It is an amenable number.

6958640 is an abundant number, since it is smaller than the sum of its proper divisors (10467328).

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

6958640 is a wasteful number, since it uses less digits than its factorization.

6958640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717 (or 6711 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6958640 is about 2637.9234257271. The cubic root of 6958640 is about 190.9156174502.

The spelling of 6958640 in words is "six million, nine hundred fifty-eight thousand, six hundred forty".