7221599 has 8 divisors (see below), whose sum is σ = 9003648. Its totient is φ = 5627160.

The previous prime is 7221589. The next prime is 7221611. The reversal of 7221599 is 9951227.

7221599 = T₆₄₅ + T₆₄₆ + ... + T₆₇₇.

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

It is not a de Polignac number, because 7221599 - 2¹⁶ = 7156063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221509) 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, 46817 + ... + 46970.

It is an arithmetic number, because the mean of its divisors is an integer number (1125456).

Almost surely, 2^7221599 is an apocalyptic number.

7221599 is a deficient number, since it is larger than the sum of its proper divisors (1782049).

7221599 is a wasteful number, since it uses less digits than its factorization.

7221599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93805.

The product of its digits is 11340, while the sum is 35.

The square root of 7221599 is about 2687.3032951269. The cubic root of 7221599 is about 193.2907730995.

The spelling of 7221599 in words is "seven million, two hundred twenty-one thousand, five hundred ninety-nine".