427666653 has 6 divisors (see below), whose sum is σ = 617740734. Its totient is φ = 285111096.

The previous prime is 427666571. The next prime is 427666697. The reversal of 427666653 is 356666724.

It can be written as a sum of positive squares in only one way, i.e., 412008804 + 15657849 = 20298^2 + 3957^2 .

It is not a de Polignac number, because 427666653 - 2¹⁶ = 427601117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 427666599 and 427666608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427666753) 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, 23759250 + ... + 23759267.

It is an arithmetic number, because the mean of its divisors is an integer number (102956789).

Almost surely, 2^427666653 is an apocalyptic number.

It is an amenable number.

427666653 is a deficient number, since it is larger than the sum of its proper divisors (190074081).

427666653 is a wasteful number, since it uses less digits than its factorization.

427666653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47518523 (or 47518520 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 427666653 is about 20680.1028285645. The cubic root of 427666653 is about 753.4165037045.

The spelling of 427666653 in words is "four hundred twenty-seven million, six hundred sixty-six thousand, six hundred fifty-three".