66740373 has 24 divisors (see below), whose sum is σ = 111196800. Its totient is φ = 37783584.

The previous prime is 66740363. The next prime is 66740389. The reversal of 66740373 is 37304766.

It is not a de Polignac number, because 66740373 - 2⁴ = 66740357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66740363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2008 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (4633200).

Almost surely, 2^66740373 is an apocalyptic number.

66740373 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66740373 is a deficient number, since it is larger than the sum of its proper divisors (44456427).

66740373 is a wasteful number, since it uses less digits than its factorization.

66740373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9841 (or 9838 counting only the distinct ones).

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

The square root of 66740373 is about 8169.4781351075. The cubic root of 66740373 is about 405.6295102707.

The spelling of 66740373 in words is "sixty-six million, seven hundred forty thousand, three hundred seventy-three".