66007205 has 16 divisors (see below), whose sum is σ = 86655744. Its totient is φ = 47868480.

The previous prime is 66007187. The next prime is 66007211. The reversal of 66007205 is 50270066.

It is not a de Polignac number, because 66007205 - 2¹⁰ = 66006181 is a prime.

It is a super-2 number, since 2×66007205² = 8713902223824050, which contains 22 as substring.

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, 20324 + ... + 23346.

It is an arithmetic number, because the mean of its divisors is an integer number (5415984).

Almost surely, 2^66007205 is an apocalyptic number.

It is an amenable number.

66007205 is a deficient number, since it is larger than the sum of its proper divisors (20648539).

66007205 is a wasteful number, since it uses less digits than its factorization.

66007205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 66007205 is about 8124.4818296307. The cubic root of 66007205 is about 404.1387071505.

The spelling of 66007205 in words is "sixty-six million, seven thousand, two hundred five".