7649961 has 16 divisors (see below), whose sum is σ = 11612160. Its totient is φ = 4434320.

The previous prime is 7649959. The next prime is 7649969. The reversal of 7649961 is 1699467.

It is not a de Polignac number, because 7649961 - 2¹ = 7649959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7649969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4281 + ... + 5798.

It is an arithmetic number, because the mean of its divisors is an integer number (725760).

Almost surely, 2^7649961 is an apocalyptic number.

It is an amenable number.

7649961 is a deficient number, since it is larger than the sum of its proper divisors (3962199).

7649961 is a wasteful number, since it uses less digits than its factorization.

7649961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10116.

The product of its digits is 81648, while the sum is 42.

The square root of 7649961 is about 2765.8562869390. The cubic root of 7649961 is about 197.0393987868.

The spelling of 7649961 in words is "seven million, six hundred forty-nine thousand, nine hundred sixty-one".