7640893 has 8 divisors (see below), whose sum is σ = 8250200. Its totient is φ = 7034688.

The previous prime is 7640887. The next prime is 7640903. The reversal of 7640893 is 3980467.

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 7634169 = 82^2 + 2763^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7640893 - 2⁵ = 7640861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640873) 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, 8803 + ... + 9631.

It is an arithmetic number, because the mean of its divisors is an integer number (1031275).

Almost surely, 2^7640893 is an apocalyptic number.

It is an amenable number.

7640893 is a deficient number, since it is larger than the sum of its proper divisors (609307).

7640893 is a wasteful number, since it uses less digits than its factorization.

7640893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 7640893 is about 2764.2165255276. The cubic root of 7640893 is about 196.9615134347.

The spelling of 7640893 in words is "seven million, six hundred forty thousand, eight hundred ninety-three".