66475470 has 32 divisors (see below), whose sum is σ = 164689920. Its totient is φ = 17154720.

The previous prime is 66475469. The next prime is 66475481. The reversal of 66475470 is 7457466.

It is a super-2 number, since 2×66475470² = 8837976223441800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34810 + ... + 36669.

It is an arithmetic number, because the mean of its divisors is an integer number (5146560).

Almost surely, 2^66475470 is an apocalyptic number.

66475470 is an abundant number, since it is smaller than the sum of its proper divisors (98214450).

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

66475470 is a wasteful number, since it uses less digits than its factorization.

66475470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71520.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 66475470 is about 8153.2490456259. The cubic root of 66475470 is about 405.0921296275.

The spelling of 66475470 in words is "sixty-six million, four hundred seventy-five thousand, four hundred seventy".