66274554 has 8 divisors (see below), whose sum is σ = 132549120. Its totient is φ = 22091516.

The previous prime is 66274531. The next prime is 66274589. The reversal of 66274554 is 45547266.

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

66274554 is an admirable 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, 5522874 + ... + 5522885.

It is an arithmetic number, because the mean of its divisors is an integer number (16568640).

Almost surely, 2^66274554 is an apocalyptic number.

66274554 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.

66274554 is a wasteful number, since it uses less digits than its factorization.

66274554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045764.

The product of its digits is 201600, while the sum is 39.

The square root of 66274554 is about 8140.9184985479. The cubic root of 66274554 is about 404.6835998561.

The spelling of 66274554 in words is "sixty-six million, two hundred seventy-four thousand, five hundred fifty-four".