7210945 has 8 divisors (see below), whose sum is σ = 9889344. Its totient is φ = 4944624.

The previous prime is 7210943. The next prime is 7210949. The reversal of 7210945 is 5490127.

It is a happy number.

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 7210945 - 2¹ = 7210943 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7210943) 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 7 ways as a sum of consecutive naturals, for example, 102979 + ... + 103048.

It is an arithmetic number, because the mean of its divisors is an integer number (1236168).

Almost surely, 2^7210945 is an apocalyptic number.

It is an amenable number.

7210945 is a deficient number, since it is larger than the sum of its proper divisors (2678399).

7210945 is a wasteful number, since it uses less digits than its factorization.

7210945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206039.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 7210945 is about 2685.3202788494. The cubic root of 7210945 is about 193.1956725809.

The spelling of 7210945 in words is "seven million, two hundred ten thousand, nine hundred forty-five".