7985649 has 8 divisors (see below), whose sum is σ = 12168640. Its totient is φ = 4563216.

The previous prime is 7985647. The next prime is 7985657. The reversal of 7985649 is 9465897.

7985649 = T₁₅₀₇ + T₁₅₀₈ + ... + T₁₅₁₃.

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

It is not a de Polignac number, because 7985649 - 2¹ = 7985647 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7985598 and 7985607.

It is not an unprimeable number, because it can be changed into a prime (7985641) 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, 190114 + ... + 190155.

It is an arithmetic number, because the mean of its divisors is an integer number (1521080).

Almost surely, 2^7985649 is an apocalyptic number.

It is an amenable number.

7985649 is a deficient number, since it is larger than the sum of its proper divisors (4182991).

7985649 is a wasteful number, since it uses less digits than its factorization.

7985649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380279.

The product of its digits is 544320, while the sum is 48.

The square root of 7985649 is about 2825.8890636400. The cubic root of 7985649 is about 199.8803367511.

The spelling of 7985649 in words is "seven million, nine hundred eighty-five thousand, six hundred forty-nine".