66083478 has 8 divisors (see below), whose sum is σ = 132166968. Its totient is φ = 22027824.

The previous prime is 66083449. The next prime is 66083491. The reversal of 66083478 is 87438066.

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

66083478 is an admirable number.

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, 5506951 + ... + 5506962.

It is an arithmetic number, because the mean of its divisors is an integer number (16520871).

Almost surely, 2^66083478 is an apocalyptic number.

66083478 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.

66083478 is a wasteful number, since it uses less digits than its factorization.

66083478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11013918.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 66083478 is about 8129.1744968355. The cubic root of 66083478 is about 404.2943114074.

The spelling of 66083478 in words is "sixty-six million, eighty-three thousand, four hundred seventy-eight".