66505354 has 32 divisors (see below), whose sum is σ = 107951616. Its totient is φ = 30663360.

The previous prime is 66505337. The next prime is 66505363. The reversal of 66505354 is 45350566.

It is a super-2 number, since 2×66505354² = 8845924221330632, which contains 22 as substring.

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, 121309 + ... + 121855.

It is an arithmetic number, because the mean of its divisors is an integer number (3373488).

Almost surely, 2^66505354 is an apocalyptic number.

66505354 is a deficient number, since it is larger than the sum of its proper divisors (41446262).

66505354 is a wasteful number, since it uses less digits than its factorization.

66505354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 66505354 is about 8155.0814833452. The cubic root of 66505354 is about 405.1528234925.

The spelling of 66505354 in words is "sixty-six million, five hundred five thousand, three hundred fifty-four".