210968045 has 8 divisors (see below), whose sum is σ = 268053624. Its totient is φ = 158846464.

The previous prime is 210968041. The next prime is 210968047. The reversal of 210968045 is 540869012.

It can be written as a sum of positive squares in 4 ways, for example, as 59505796 + 151462249 = 7714^2 + 12307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210968045 - 2² = 210968041 is a prime.

It is a super-2 number, since 2×210968045² = 89015032022244050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210967996 and 210968014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210968041) 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, 1240904 + ... + 1241073.

It is an arithmetic number, because the mean of its divisors is an integer number (33506703).

Almost surely, 2^210968045 is an apocalyptic number.

It is an amenable number.

210968045 is a deficient number, since it is larger than the sum of its proper divisors (57085579).

210968045 is a wasteful number, since it uses less digits than its factorization.

210968045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481999.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 210968045 is about 14524.7390682243. The cubic root of 210968045 is about 595.3041262362.

The spelling of 210968045 in words is "two hundred ten million, nine hundred sixty-eight thousand, forty-five".