66507054 has 32 divisors (see below), whose sum is σ = 135087264. Its totient is φ = 21826560.

The previous prime is 66507031. The next prime is 66507107. The reversal of 66507054 is 45070566.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157764 + ... + 158184.

It is an arithmetic number, because the mean of its divisors is an integer number (4221477).

Almost surely, 2^66507054 is an apocalyptic number.

66507054 is an abundant number, since it is smaller than the sum of its proper divisors (68580210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66507054 is a wasteful number, since it uses less digits than its factorization.

66507054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 66507054 is about 8155.1857121711. The cubic root of 66507054 is about 405.1562756152.

The spelling of 66507054 in words is "sixty-six million, five hundred seven thousand, fifty-four".