66800037 has 8 divisors (see below), whose sum is σ = 90287104. Its totient is φ = 43923168.

The previous prime is 66800033. The next prime is 66800051. The reversal of 66800037 is 73000866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66800037 - 2² = 66800033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66799977 and 66800013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66800033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152293 + ... + 152730.

It is an arithmetic number, because the mean of its divisors is an integer number (11285888).

Almost surely, 2^66800037 is an apocalyptic number.

It is an amenable number.

66800037 is a deficient number, since it is larger than the sum of its proper divisors (23487067).

66800037 is a wasteful number, since it uses less digits than its factorization.

66800037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305099.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 66800037 is about 8173.1289601963. The cubic root of 66800037 is about 405.7503480275.

The spelling of 66800037 in words is "sixty-six million, eight hundred thousand, thirty-seven".