66528190 has 16 divisors (see below), whose sum is σ = 124957728. Its totient is φ = 25454176.

The previous prime is 66528173. The next prime is 66528227. The reversal of 66528190 is 9182566.

It is a super-2 number, since 2×66528190² = 8852000129352200, which contains 22 as substring.

It is a congruent number.

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, 144397 + ... + 144856.

It is an arithmetic number, because the mean of its divisors is an integer number (7809858).

Almost surely, 2^66528190 is an apocalyptic number.

66528190 is a deficient number, since it is larger than the sum of its proper divisors (58429538).

66528190 is a wasteful number, since it uses less digits than its factorization.

66528190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289283.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 66528190 is about 8156.4814718112. The cubic root of 66528190 is about 405.1991907425.

The spelling of 66528190 in words is "sixty-six million, five hundred twenty-eight thousand, one hundred ninety".