66250004 has 12 divisors (see below), whose sum is σ = 116608884. Its totient is φ = 32933184.

The previous prime is 66249983. The next prime is 66250027. The reversal of 66250004 is 40005266.

It can be written as a sum of positive squares in 2 ways, for example, as 63520900 + 2729104 = 7970^2 + 1652^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47177 + ... + 48560.

It is an arithmetic number, because the mean of its divisors is an integer number (9717407).

Almost surely, 2^66250004 is an apocalyptic number.

It is an amenable number.

66250004 is a deficient number, since it is larger than the sum of its proper divisors (50358880).

66250004 is a wasteful number, since it uses less digits than its factorization.

66250004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95914 (or 95912 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 66250004 is about 8139.4105437679. The cubic root of 66250004 is about 404.6336248719.

The spelling of 66250004 in words is "sixty-six million, two hundred fifty thousand, four".