647671453 has 16 divisors (see below), whose sum is σ = 763430976. Its totient is φ = 541693440.

The previous prime is 647671447. The next prime is 647671459. The reversal of 647671453 is 354176746.

It is an interprime number because it is at equal distance from previous prime (647671447) and next prime (647671459).

It is a cyclic number.

It is not a de Polignac number, because 647671453 - 2²¹ = 645574301 is a prime.

It is a super-2 number, since 2×647671453² = 838956622062262418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647671459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36525 + ... + 51277.

It is an arithmetic number, because the mean of its divisors is an integer number (47714436).

Almost surely, 2^647671453 is an apocalyptic number.

It is an amenable number.

647671453 is a deficient number, since it is larger than the sum of its proper divisors (115759523).

647671453 is a wasteful number, since it uses less digits than its factorization.

647671453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15084.

The product of its digits is 423360, while the sum is 43.

The square root of 647671453 is about 25449.3900319831. The cubic root of 647671453 is about 865.2034684576.

The spelling of 647671453 in words is "six hundred forty-seven million, six hundred seventy-one thousand, four hundred fifty-three".