7221901647 has 8 divisors (see below), whose sum is σ = 9889451056. Its totient is φ = 4684476672.

The previous prime is 7221901571. The next prime is 7221901657. The reversal of 7221901647 is 7461091227.

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

It is not a de Polignac number, because 7221901647 - 2¹¹ = 7221899599 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 (7221901657) 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, 32530978 + ... + 32531199.

It is an arithmetic number, because the mean of its divisors is an integer number (1236181382).

Almost surely, 2^7221901647 is an apocalyptic number.

7221901647 is a deficient number, since it is larger than the sum of its proper divisors (2667549409).

7221901647 is a wasteful number, since it uses less digits than its factorization.

7221901647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65062217.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 7221901647 is about 84981.7724397415. The cubic root of 7221901647 is about 1932.9347324273.

The spelling of 7221901647 in words is "seven billion, two hundred twenty-one million, nine hundred one thousand, six hundred forty-seven".