213617601 has 8 divisors (see below), whose sum is σ = 316470560. Its totient is φ = 142411716.

The previous prime is 213617581. The next prime is 213617609. The reversal of 213617601 is 106716312.

213617601 is a `hidden beast` number, since 21 + 36 + 1 + 7 + 601 = 666.

It is not a de Polignac number, because 213617601 - 2¹⁴ = 213601217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7911763 = 213617601 / (2 + 1 + 3 + 6 + 1 + 7 + 6 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213617609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3955855 + ... + 3955908.

It is an arithmetic number, because the mean of its divisors is an integer number (39558820).

Almost surely, 2^213617601 is an apocalyptic number.

It is an amenable number.

213617601 is a deficient number, since it is larger than the sum of its proper divisors (102852959).

213617601 is an equidigital number, since it uses as much as digits as its factorization.

213617601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911772 (or 7911766 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 213617601 is about 14615.6628655699. The cubic root of 213617601 is about 597.7859147608.

The spelling of 213617601 in words is "two hundred thirteen million, six hundred seventeen thousand, six hundred one".