647551151 has 8 divisors (see below), whose sum is σ = 697804464. Its totient is φ = 597360960.

The previous prime is 647551139. The next prime is 647551183. The reversal of 647551151 is 151155746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 647551151 - 2⁶ = 647551087 is a prime.

It is a super-2 number, since 2×647551151² = 838644986322849602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647551951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6731 + ... + 36611.

It is an arithmetic number, because the mean of its divisors is an integer number (87225558).

Almost surely, 2^647551151 is an apocalyptic number.

647551151 is a deficient number, since it is larger than the sum of its proper divisors (50253313).

647551151 is a wasteful number, since it uses less digits than its factorization.

647551151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31561.

The product of its digits is 21000, while the sum is 35.

The square root of 647551151 is about 25447.0263685170. The cubic root of 647551151 is about 865.1498959494.

The spelling of 647551151 in words is "six hundred forty-seven million, five hundred fifty-one thousand, one hundred fifty-one".