647454133 has 4 divisors (see below), whose sum is σ = 650522848. Its totient is φ = 644385420.

The previous prime is 647454131. The next prime is 647454149. The reversal of 647454133 is 331454746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 647454133 - 2¹ = 647454131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 647454092 and 647454101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647454131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1534041 + ... + 1534462.

It is an arithmetic number, because the mean of its divisors is an integer number (162630712).

Almost surely, 2^647454133 is an apocalyptic number.

It is an amenable number.

647454133 is a deficient number, since it is larger than the sum of its proper divisors (3068715).

647454133 is a wasteful number, since it uses less digits than its factorization.

647454133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068714.

The product of its digits is 120960, while the sum is 37.

The square root of 647454133 is about 25445.1200232972. The cubic root of 647454133 is about 865.1066873654.

The spelling of 647454133 in words is "six hundred forty-seven million, four hundred fifty-four thousand, one hundred thirty-three".