7205666705 has 16 divisors (see below), whose sum is σ = 8687658240. Its totient is φ = 5737359552.

The previous prime is 7205666701. The next prime is 7205666707. The reversal of 7205666705 is 5076665027.

It is a cyclic number.

It is not a de Polignac number, because 7205666705 - 2² = 7205666701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7205666701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996212 + ... + 1003418.

It is an arithmetic number, because the mean of its divisors is an integer number (542978640).

Almost surely, 2^7205666705 is an apocalyptic number.

It is an amenable number.

7205666705 is a deficient number, since it is larger than the sum of its proper divisors (1481991535).

7205666705 is a wasteful number, since it uses less digits than its factorization.

7205666705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8128.

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 7205666705 is about 84886.1985542997. The cubic root of 7205666705 is about 1931.4852237307.

The spelling of 7205666705 in words is "seven billion, two hundred five million, six hundred sixty-six thousand, seven hundred five".