66355205 has 16 divisors (see below), whose sum is σ = 92721024. Its totient is φ = 44640960.

The previous prime is 66355193. The next prime is 66355217. The reversal of 66355205 is 50255366.

It is an interprime number because it is at equal distance from previous prime (66355193) and next prime (66355217).

It is not a de Polignac number, because 66355205 - 2⁶ = 66355141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16031 + ... + 19740.

It is an arithmetic number, because the mean of its divisors is an integer number (5795064).

Almost surely, 2^66355205 is an apocalyptic number.

It is an amenable number.

66355205 is a deficient number, since it is larger than the sum of its proper divisors (26365819).

66355205 is a wasteful number, since it uses less digits than its factorization.

66355205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35836.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 66355205 is about 8145.8704261730. The cubic root of 66355205 is about 404.8476895135.

It can be divided in two parts, 6635520 and 5, that multiplied together give a square (33177600 = 5760²).

The spelling of 66355205 in words is "sixty-six million, three hundred fifty-five thousand, two hundred five".