66073312 has 24 divisors (see below), whose sum is σ = 131654376. Its totient is φ = 32637312.

The previous prime is 66073303. The next prime is 66073313. The reversal of 66073312 is 21337066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66073313) 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, 9783 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (5485599).

Almost surely, 2^66073312 is an apocalyptic number.

It is an amenable number.

66073312 is a deficient number, since it is larger than the sum of its proper divisors (65581064).

66073312 is a wasteful number, since it uses less digits than its factorization.

66073312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24970 (or 24962 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 66073312 is about 8128.5491940444. The cubic root of 66073312 is about 404.2735787076.

The spelling of 66073312 in words is "sixty-six million, seventy-three thousand, three hundred twelve".