7641287 has 12 divisors (see below), whose sum is σ = 8220456. Its totient is φ = 7099920.

The previous prime is 7641281. The next prime is 7641289. The reversal of 7641287 is 7821467.

It is a happy number.

It is not a de Polignac number, because 7641287 - 2⁶ = 7641223 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 (7641281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21848 + ... + 22194.

It is an arithmetic number, because the mean of its divisors is an integer number (685038).

Almost surely, 2^7641287 is an apocalyptic number.

7641287 is a deficient number, since it is larger than the sum of its proper divisors (579169).

7641287 is a wasteful number, since it uses less digits than its factorization.

7641287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 427 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 7641287 is about 2764.2877925426. The cubic root of 7641287 is about 196.9648987939.

The spelling of 7641287 in words is "seven million, six hundred forty-one thousand, two hundred eighty-seven".