7641653 has 8 divisors (see below), whose sum is σ = 8224920. Its totient is φ = 7073280.

The previous prime is 7641649. The next prime is 7641671. The reversal of 7641653 is 3561467.

It can be written as a sum of positive squares in 4 ways, for example, as 1697809 + 5943844 = 1303^2 + 2438^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7641653 - 2² = 7641649 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 (7641253) 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, 2648 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (1028115).

Almost surely, 2^7641653 is an apocalyptic number.

It is an amenable number.

7641653 is a deficient number, since it is larger than the sum of its proper divisors (583267).

7641653 is a wasteful number, since it uses less digits than its factorization.

7641653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7447.

The product of its digits is 15120, while the sum is 32.

The square root of 7641653 is about 2764.3539932505. The cubic root of 7641653 is about 196.9680434649.

The spelling of 7641653 in words is "seven million, six hundred forty-one thousand, six hundred fifty-three".