66163250 has 32 divisors (see below), whose sum is σ = 124360704. Its totient is φ = 26358000.

The previous prime is 66163247. The next prime is 66163271. The reversal of 66163250 is 5236166.

66163250 = T₄₄ + T₄₅ + ... + T₇₃₄.

66163250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95405 + ... + 96095.

It is an arithmetic number, because the mean of its divisors is an integer number (3886272).

Almost surely, 2^66163250 is an apocalyptic number.

66163250 is a deficient number, since it is larger than the sum of its proper divisors (58197454).

66163250 is a wasteful number, since it uses less digits than its factorization.

66163250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66163250 is about 8134.0795422715. The cubic root of 66163250 is about 404.4569259175.

The spelling of 66163250 in words is "sixty-six million, one hundred sixty-three thousand, two hundred fifty".