7641986 has 16 divisors (see below), whose sum is σ = 12666240. Its totient is φ = 3428880.

The previous prime is 7641983. The next prime is 7641989. The reversal of 7641986 is 6891467.

It is an interprime number because it is at equal distance from previous prime (7641983) and next prime (7641989).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7641983) 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, 461 + ... + 3936.

It is an arithmetic number, because the mean of its divisors is an integer number (791640).

Almost surely, 2^7641986 is an apocalyptic number.

7641986 is a deficient number, since it is larger than the sum of its proper divisors (5024254).

7641986 is a wasteful number, since it uses less digits than its factorization.

7641986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489.

The product of its digits is 72576, while the sum is 41.

The square root of 7641986 is about 2764.4142236648. The cubic root of 7641986 is about 196.9709045128.

The spelling of 7641986 in words is "seven million, six hundred forty-one thousand, nine hundred eighty-six".