7640849 has 8 divisors (see below), whose sum is σ = 7967232. Its totient is φ = 7319520.

The previous prime is 7640827. The next prime is 7640861. The reversal of 7640849 is 9480467.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7640849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7640879) 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 7 ways as a sum of consecutive naturals, for example, 1997 + ... + 4389.

It is an arithmetic number, because the mean of its divisors is an integer number (995904).

Almost surely, 2^7640849 is an apocalyptic number.

It is an amenable number.

7640849 is a deficient number, since it is larger than the sum of its proper divisors (326383).

7640849 is a wasteful number, since it uses less digits than its factorization.

7640849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 7640849 is about 2764.2085666606. The cubic root of 7640849 is about 196.9611353670.

The spelling of 7640849 in words is "seven million, six hundred forty thousand, eight hundred forty-nine".