6651463 has 16 divisors (see below), whose sum is σ = 8619520. Its totient is φ = 4984416.

The previous prime is 6651457. The next prime is 6651467. The reversal of 6651463 is 3641566.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6651463 is a prime.

6651463 is a modest number, since divided by 1463 gives 665 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195 + ... + 3652.

It is an arithmetic number, because the mean of its divisors is an integer number (538720).

Almost surely, 2^6651463 is an apocalyptic number.

6651463 is a deficient number, since it is larger than the sum of its proper divisors (1968057).

6651463 is a wasteful number, since it uses less digits than its factorization.

6651463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886.

The product of its digits is 12960, while the sum is 31.

The square root of 6651463 is about 2579.0430395788. The cubic root of 6651463 is about 188.0640248962.

It can be divided in two parts, 66 and 51463, that added together give a square (51529 = 227²).

The spelling of 6651463 in words is "six million, six hundred fifty-one thousand, four hundred sixty-three".