647623422 has 12 divisors (see below), whose sum is σ = 1403184120. Its totient is φ = 215874468.

The previous prime is 647623409. The next prime is 647623429. The reversal of 647623422 is 224326746.

647623422 is a `hidden beast` number, since 6 + 4 + 7 + 623 + 4 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647623429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17989522 + ... + 17989557.

It is an arithmetic number, because the mean of its divisors is an integer number (116932010).

Almost surely, 2^647623422 is an apocalyptic number.

647623422 is an abundant number, since it is smaller than the sum of its proper divisors (755560698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647623422 is a wasteful number, since it uses less digits than its factorization.

647623422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35979087 (or 35979084 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 647623422 is about 25448.4463572926. The cubic root of 647623422 is about 865.1820802394.

The spelling of 647623422 in words is "six hundred forty-seven million, six hundred twenty-three thousand, four hundred twenty-two".