647653461 has 24 divisors (see below), whose sum is σ = 1068661440. Its totient is φ = 341617536.

The previous prime is 647653459. The next prime is 647653483. The reversal of 647653461 is 164356746.

It is not a de Polignac number, because 647653461 - 2¹ = 647653459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647653411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87696 + ... + 94793.

It is an arithmetic number, because the mean of its divisors is an integer number (44527560).

Almost surely, 2^647653461 is an apocalyptic number.

It is an amenable number.

647653461 is a deficient number, since it is larger than the sum of its proper divisors (421007979).

647653461 is a wasteful number, since it uses less digits than its factorization.

647653461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182525 (or 182512 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 647653461 is about 25449.0365436493. The cubic root of 647653461 is about 865.1954567387.

The spelling of 647653461 in words is "six hundred forty-seven million, six hundred fifty-three thousand, four hundred sixty-one".