66276605 has 8 divisors (see below), whose sum is σ = 82097664. Its totient is φ = 51310800.

The previous prime is 66276599. The next prime is 66276649. The reversal of 66276605 is 50667266.

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

It is not a de Polignac number, because 66276605 - 2⁸ = 66276349 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 213641 + ... + 213950.

It is an arithmetic number, because the mean of its divisors is an integer number (10262208).

Almost surely, 2^66276605 is an apocalyptic number.

It is an amenable number.

66276605 is a deficient number, since it is larger than the sum of its proper divisors (15821059).

66276605 is a wasteful number, since it uses less digits than its factorization.

66276605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427627.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 66276605 is about 8141.0444661603. The cubic root of 66276605 is about 404.6877743969.

The spelling of 66276605 in words is "sixty-six million, two hundred seventy-six thousand, six hundred five".