66451382 has 8 divisors (see below), whose sum is σ = 99738216. Its totient is φ = 33205312.

The previous prime is 66451369. The next prime is 66451391. The reversal of 66451382 is 28315466.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5723 + ... + 12870.

It is an arithmetic number, because the mean of its divisors is an integer number (12467277).

Almost surely, 2^66451382 is an apocalyptic number.

66451382 is a deficient number, since it is larger than the sum of its proper divisors (33286834).

66451382 is a wasteful number, since it uses less digits than its factorization.

66451382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20382.

The product of its digits is 34560, while the sum is 35.

The square root of 66451382 is about 8151.7717092666. The cubic root of 66451382 is about 405.0431940925.

The spelling of 66451382 in words is "sixty-six million, four hundred fifty-one thousand, three hundred eighty-two".