66734073 has 12 divisors (see below), whose sum is σ = 110164288. Its totient is φ = 38133720.

The previous prime is 66734047. The next prime is 66734131. The reversal of 66734073 is 37043766.

It is not a de Polignac number, because 66734073 - 2¹² = 66729977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (62734073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529573 + ... + 529698.

Almost surely, 2^66734073 is an apocalyptic number.

66734073 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66734073 is a deficient number, since it is larger than the sum of its proper divisors (43430215).

66734073 is a wasteful number, since it uses less digits than its factorization.

66734073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059284 (or 1059281 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 66734073 is about 8169.0925444629. The cubic root of 66734073 is about 405.6167466505.

The spelling of 66734073 in words is "sixty-six million, seven hundred thirty-four thousand, seventy-three".