66361734 has 32 divisors (see below), whose sum is σ = 147987840. Its totient is φ = 22043016.

The previous prime is 66361733. The next prime is 66361753. The reversal of 66361734 is 43716366.

It is a happy number.

66361734 is a `hidden beast` number, since 6 + 6 + 3 + 617 + 34 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66361733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14577 + ... + 18579.

It is an arithmetic number, because the mean of its divisors is an integer number (4624620).

Almost surely, 2^66361734 is an apocalyptic number.

66361734 is an abundant number, since it is smaller than the sum of its proper divisors (81626106).

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

66361734 is a wasteful number, since it uses less digits than its factorization.

66361734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321 (or 4315 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 66361734 is about 8146.2711715238. The cubic root of 66361734 is about 404.8609673660.

The spelling of 66361734 in words is "sixty-six million, three hundred sixty-one thousand, seven hundred thirty-four".