66625074 has 48 divisors (see below), whose sum is σ = 153653760. Its totient is φ = 20791680.

The previous prime is 66625067. The next prime is 66625099. The reversal of 66625074 is 47052666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72679 + ... + 73589.

It is an arithmetic number, because the mean of its divisors is an integer number (3201120).

Almost surely, 2^66625074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66625074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76826880).

66625074 is an abundant number, since it is smaller than the sum of its proper divisors (87028686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66625074 is a wasteful number, since it uses less digits than its factorization.

66625074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 66625074 is about 8162.4183916288. The cubic root of 66625074 is about 405.3957904956.

The spelling of 66625074 in words is "sixty-six million, six hundred twenty-five thousand, seventy-four".