7964540 has 12 divisors (see below), whose sum is σ = 16725576. Its totient is φ = 3185808.

The previous prime is 7964471. The next prime is 7964549. The reversal of 7964540 is 454697.

It is a self number, because there is not a number n which added to its sum of digits gives 7964540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7964549) 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, 199094 + ... + 199133.

It is an arithmetic number, because the mean of its divisors is an integer number (1393798).

Almost surely, 2^7964540 is an apocalyptic number.

It is an amenable number.

7964540 is an abundant number, since it is smaller than the sum of its proper divisors (8761036).

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

7964540 is a wasteful number, since it uses less digits than its factorization.

7964540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398236 (or 398234 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 7964540 is about 2822.1516614101. The cubic root of 7964540 is about 199.7040623204.

The spelling of 7964540 in words is "seven million, nine hundred sixty-four thousand, five hundred forty".