66674130 has 64 divisors (see below), whose sum is σ = 164505600. Its totient is φ = 17288640.

The previous prime is 66674117. The next prime is 66674137. The reversal of 66674130 is 3147666.

It is a super-2 number, since 2×66674130² = 8890879222513800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66674091 and 66674100.

It is not an unprimeable number, because it can be changed into a prime (66674137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245895 + ... + 246165.

It is an arithmetic number, because the mean of its divisors is an integer number (2570400).

Almost surely, 2^66674130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66674130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82252800).

66674130 is an abundant number, since it is smaller than the sum of its proper divisors (97831470).

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

66674130 is a wasteful number, since it uses less digits than its factorization.

66674130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 66674130 is about 8165.4228304479. The cubic root of 66674130 is about 405.4952636406.

The spelling of 66674130 in words is "sixty-six million, six hundred seventy-four thousand, one hundred thirty".