647097353 has 4 divisors (see below), whose sum is σ = 739539840. Its totient is φ = 554654868.

The previous prime is 647097343. The next prime is 647097359. The reversal of 647097353 is 353790746.

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, and also an emirpimes, since its reverse is a distinct semiprime: 353790746 = 2 ⋅176895373.

It is a cyclic number.

It is not a de Polignac number, because 647097353 - 2²² = 642903049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647097359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46221233 + ... + 46221246.

It is an arithmetic number, because the mean of its divisors is an integer number (184884960).

Almost surely, 2^647097353 is an apocalyptic number.

It is an amenable number.

647097353 is a deficient number, since it is larger than the sum of its proper divisors (92442487).

647097353 is an equidigital number, since it uses as much as digits as its factorization.

647097353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92442486.

The product of its (nonzero) digits is 476280, while the sum is 44.

The square root of 647097353 is about 25438.1082826534. The cubic root of 647097353 is about 864.9477523099.

It can be divided in two parts, 6470 and 97353, that added together give a cube (103823 = 47³).

The spelling of 647097353 in words is "six hundred forty-seven million, ninety-seven thousand, three hundred fifty-three".