647653151 has 4 divisors (see below), whose sum is σ = 647752152. Its totient is φ = 647554152.

The previous prime is 647653129. The next prime is 647653157. The reversal of 647653151 is 151356746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 647653151 - 2⁶ = 647653087 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 (647653157) 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 3 ways as a sum of consecutive naturals, for example, 38936 + ... + 53021.

It is an arithmetic number, because the mean of its divisors is an integer number (161938038).

Almost surely, 2^647653151 is an apocalyptic number.

647653151 is a deficient number, since it is larger than the sum of its proper divisors (99001).

647653151 is an equidigital number, since it uses as much as digits as its factorization.

647653151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99000.

The product of its digits is 75600, while the sum is 38.

The square root of 647653151 is about 25449.0304530448. The cubic root of 647653151 is about 865.1953186964.

The spelling of 647653151 in words is "six hundred forty-seven million, six hundred fifty-three thousand, one hundred fifty-one".