652947671 has 4 divisors (see below), whose sum is σ = 655357344. Its totient is φ = 650538000.

The previous prime is 652947661. The next prime is 652947677. The reversal of 652947671 is 176749256.

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 652947671 - 2²² = 648753367 is a prime.

It is a super-2 number, since 2×652947671² = 852681322128648482, 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 (652947677) 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, 1204430 + ... + 1204971.

It is an arithmetic number, because the mean of its divisors is an integer number (163839336).

Almost surely, 2^652947671 is an apocalyptic number.

652947671 is a deficient number, since it is larger than the sum of its proper divisors (2409673).

652947671 is a wasteful number, since it uses less digits than its factorization.

652947671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409672.

The product of its digits is 635040, while the sum is 47.

The square root of 652947671 is about 25552.8407618409. The cubic root of 652947671 is about 867.5465606316.

The spelling of 652947671 in words is "six hundred fifty-two million, nine hundred forty-seven thousand, six hundred seventy-one".