7954640 has 40 divisors (see below), whose sum is σ = 19585800. Its totient is φ = 2994176.

The previous prime is 7954621. The next prime is 7954649. The reversal of 7954640 is 464597.

It can be written as a sum of positive squares in 4 ways, for example, as 1132096 + 6822544 = 1064^2 + 2612^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 7954640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7954649) 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, 1565 + ... + 4284.

It is an arithmetic number, because the mean of its divisors is an integer number (489645).

Almost surely, 2^7954640 is an apocalyptic number.

It is an amenable number.

7954640 is an abundant number, since it is smaller than the sum of its proper divisors (11631160).

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

7954640 is a wasteful number, since it uses less digits than its factorization.

7954640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879 (or 5873 counting only the distinct ones).

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

The square root of 7954640 is about 2820.3971351567. The cubic root of 7954640 is about 199.6212833210.

The spelling of 7954640 in words is "seven million, nine hundred fifty-four thousand, six hundred forty".