7220697 has 8 divisors (see below), whose sum is σ = 10502880. Its totient is φ = 4376160.

The previous prime is 7220693. The next prime is 7220701. The reversal of 7220697 is 7960227.

It is an interprime number because it is at equal distance from previous prime (7220693) and next prime (7220701).

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

It is not a de Polignac number, because 7220697 - 2² = 7220693 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 218809 = 7220697 / (7 + 2 + 2 + 0 + 6 + 9 + 7).

It is not an unprimeable number, because it can be changed into a prime (7220693) 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, 109372 + ... + 109437.

It is an arithmetic number, because the mean of its divisors is an integer number (1312860).

Almost surely, 2^7220697 is an apocalyptic number.

It is an amenable number.

7220697 is a deficient number, since it is larger than the sum of its proper divisors (3282183).

7220697 is a wasteful number, since it uses less digits than its factorization.

7220697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218823.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 7220697 is about 2687.1354636490. The cubic root of 7220697 is about 193.2827252264.

The spelling of 7220697 in words is "seven million, two hundred twenty thousand, six hundred ninety-seven".