60521666 has 16 divisors (see below), whose sum is σ = 99438840. Its totient is φ = 27498240.

The previous prime is 60521653. The next prime is 60521687. The reversal of 60521666 is 66612506.

It can be written as a sum of positive squares in 4 ways, for example, as 44689225 + 15832441 = 6685^2 + 3979^2 .

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, 29705 + ... + 31676.

Almost surely, 2^60521666 is an apocalyptic number.

60521666 is a deficient number, since it is larger than the sum of its proper divisors (38917174).

60521666 is a wasteful number, since it uses less digits than its factorization.

60521666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61429.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 60521666 is about 7779.5672116127. The cubic root of 60521666 is about 392.6180769069.

The spelling of 60521666 in words is "sixty million, five hundred twenty-one thousand, six hundred sixty-six".