66046554 has 96 divisors (see below), whose sum is σ = 173761536. Its totient is φ = 17729280.

The previous prime is 66046549. The next prime is 66046567. The reversal of 66046554 is 45564066.

It is a happy number.

66046554 is a `hidden beast` number, since 6 + 60 + 46 + 554 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144294 + ... + 144750.

It is an arithmetic number, because the mean of its divisors is an integer number (1810016).

Almost surely, 2^66046554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66046554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86880768).

66046554 is an abundant number, since it is smaller than the sum of its proper divisors (107714982).

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

66046554 is a wasteful number, since it uses less digits than its factorization.

66046554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 66046554 is about 8126.9031001975. The cubic root of 66046554 is about 404.2189978554.

The spelling of 66046554 in words is "sixty-six million, forty-six thousand, five hundred fifty-four".