7640418 has 8 divisors (see below), whose sum is σ = 15280848. Its totient is φ = 2546804.

The previous prime is 7640411. The next prime is 7640419. The reversal of 7640418 is 8140467.

It is a sphenic number, since it is the product of 3 distinct primes.

7640418 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7640411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636696 + ... + 636707.

It is an arithmetic number, because the mean of its divisors is an integer number (1910106).

Almost surely, 2^7640418 is an apocalyptic number.

7640418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7640418 is a wasteful number, since it uses less digits than its factorization.

7640418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273408.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 7640418 is about 2764.1306047291. The cubic root of 7640418 is about 196.9574319459.

The spelling of 7640418 in words is "seven million, six hundred forty thousand, four hundred eighteen".