71307066 has 16 divisors (see below), whose sum is σ = 146469024. Its totient is φ = 23126544.

The previous prime is 71307031. The next prime is 71307083. The reversal of 71307066 is 66070317.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160380 + ... + 160823.

It is an arithmetic number, because the mean of its divisors is an integer number (9154314).

Almost surely, 2^71307066 is an apocalyptic number.

71307066 is an abundant number, since it is smaller than the sum of its proper divisors (75161958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71307066 is a wasteful number, since it uses less digits than its factorization.

71307066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321245.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 71307066 is about 8444.3511296014. The cubic root of 71307066 is about 414.6778668216.

It can be divided in two parts, 7130 and 7066, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 71307066 in words is "seventy-one million, three hundred seven thousand, sixty-six".