75321066 has 8 divisors (see below), whose sum is σ = 150642144. Its totient is φ = 25107020.

The previous prime is 75321061. The next prime is 75321083. The reversal of 75321066 is 66012357.

It is a sphenic number, since it is the product of 3 distinct primes.

75321066 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (75321061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6276750 + ... + 6276761.

It is an arithmetic number, because the mean of its divisors is an integer number (18830268).

Almost surely, 2^75321066 is an apocalyptic number.

75321066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

75321066 is a wasteful number, since it uses less digits than its factorization.

75321066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12553516.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 75321066 is about 8678.7709959418. The cubic root of 75321066 is about 422.3172483203.

The spelling of 75321066 in words is "seventy-five million, three hundred twenty-one thousand, sixty-six".