7678340 has 12 divisors (see below), whose sum is σ = 16124556. Its totient is φ = 3071328.

The previous prime is 7678331. The next prime is 7678361. The reversal of 7678340 is 438767.

It can be written as a sum of positive squares in 2 ways, for example, as 1032256 + 6646084 = 1016^2 + 2578^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7678340.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191939 + ... + 191978.

It is an arithmetic number, because the mean of its divisors is an integer number (1343713).

Almost surely, 2^7678340 is an apocalyptic number.

It is an amenable number.

7678340 is an abundant number, since it is smaller than the sum of its proper divisors (8446216).

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

7678340 is a wasteful number, since it uses less digits than its factorization.

7678340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383926 (or 383924 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 7678340 is about 2770.9817754724. The cubic root of 7678340 is about 197.2827499498.

The spelling of 7678340 in words is "seven million, six hundred seventy-eight thousand, three hundred forty".