7651663 has 8 divisors (see below), whose sum is σ = 8136288. Its totient is φ = 7179744.

The previous prime is 7651643. The next prime is 7651673. The reversal of 7651663 is 3661567.

It is a happy number.

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 7651663 - 2⁹ = 7651151 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 (7651603) 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, 1920 + ... + 4357.

It is an arithmetic number, because the mean of its divisors is an integer number (1017036).

Almost surely, 2^7651663 is an apocalyptic number.

7651663 is a deficient number, since it is larger than the sum of its proper divisors (484625).

7651663 is a wasteful number, since it uses less digits than its factorization.

7651663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6353.

The product of its digits is 22680, while the sum is 34.

The square root of 7651663 is about 2766.1639503110. The cubic root of 7651663 is about 197.0540104599.

The spelling of 7651663 in words is "seven million, six hundred fifty-one thousand, six hundred sixty-three".