66734075 has 24 divisors (see below), whose sum is σ = 86713200. Its totient is φ = 50879360.

The previous prime is 66734047. The next prime is 66734131. The reversal of 66734075 is 57043766.

It is not a de Polignac number, because 66734075 - 2⁶ = 66734011 is a prime.

It is a super-2 number, since 2×66734075² = 8906873532211250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59621 + ... + 60729.

It is an arithmetic number, because the mean of its divisors is an integer number (3613050).

Almost surely, 2^66734075 is an apocalyptic number.

66734075 is a deficient number, since it is larger than the sum of its proper divisors (19979125).

66734075 is a wasteful number, since it uses less digits than its factorization.

66734075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 66734075 is about 8169.0926668756. The cubic root of 66734075 is about 405.6167507026.

The spelling of 66734075 in words is "sixty-six million, seven hundred thirty-four thousand, seventy-five".