7642217 has 4 divisors (see below), whose sum is σ = 8336976. Its totient is φ = 6947460.

The previous prime is 7642183. The next prime is 7642241. The reversal of 7642217 is 7122467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7642217 - 2⁸ = 7641961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7642217.

It is not an unprimeable number, because it can be changed into a prime (7642267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347363 + ... + 347384.

It is an arithmetic number, because the mean of its divisors is an integer number (2084244).

Almost surely, 2^7642217 is an apocalyptic number.

It is an amenable number.

7642217 is a deficient number, since it is larger than the sum of its proper divisors (694759).

7642217 is a wasteful number, since it uses less digits than its factorization.

7642217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694758.

The product of its digits is 4704, while the sum is 29.

The square root of 7642217 is about 2764.4560043524. The cubic root of 7642217 is about 196.9728891549.

The spelling of 7642217 in words is "seven million, six hundred forty-two thousand, two hundred seventeen".