562651661 has 16 divisors (see below), whose sum is σ = 670084800. Its totient is φ = 465678720.

The previous prime is 562651631. The next prime is 562651673. The reversal of 562651661 is 166156265.

It is not a de Polignac number, because 562651661 - 2²² = 558457357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (562651631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16511 + ... + 37388.

It is an arithmetic number, because the mean of its divisors is an integer number (41880300).

Almost surely, 2^562651661 is an apocalyptic number.

It is an amenable number.

562651661 is a deficient number, since it is larger than the sum of its proper divisors (107433139).

562651661 is a wasteful number, since it uses less digits than its factorization.

562651661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53996.

The product of its digits is 64800, while the sum is 38.

The square root of 562651661 is about 23720.2795303934. The cubic root of 562651661 is about 825.5559942369. Note that the first 3 decimals are identical.

The spelling of 562651661 in words is "five hundred sixty-two million, six hundred fifty-one thousand, six hundred sixty-one".