66167005 has 16 divisors (see below), whose sum is σ = 81052848. Its totient is φ = 51840000.

The previous prime is 66166993. The next prime is 66167029. The reversal of 66167005 is 50076166.

It can be written as a sum of positive squares in 8 ways, for example, as 443556 + 65723449 = 666^2 + 8107^2 .

It is not a de Polignac number, because 66167005 - 2⁵ = 66166973 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, 122035 + ... + 122575.

It is an arithmetic number, because the mean of its divisors is an integer number (5065803).

Almost surely, 2^66167005 is an apocalyptic number.

It is an amenable number.

66167005 is a deficient number, since it is larger than the sum of its proper divisors (14885843).

66167005 is a wasteful number, since it uses less digits than its factorization.

66167005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 66167005 is about 8134.3103579836. The cubic root of 66167005 is about 404.4645772296.

The spelling of 66167005 in words is "sixty-six million, one hundred sixty-seven thousand, five".