66290038 has 8 divisors (see below), whose sum is σ = 105284232. Its totient is φ = 31195296.

The previous prime is 66290033. The next prime is 66290039. The reversal of 66290038 is 83009266.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 1949707 = 66290038 / (6 + 6 + 2 + 9 + 0 + 0 + 3 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 66289985 and 66290012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66290033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974820 + ... + 974887.

It is an arithmetic number, because the mean of its divisors is an integer number (13160529).

Almost surely, 2^66290038 is an apocalyptic number.

66290038 is a deficient number, since it is larger than the sum of its proper divisors (38994194).

66290038 is a wasteful number, since it uses less digits than its factorization.

66290038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949726.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 66290038 is about 8141.8694413507. The cubic root of 66290038 is about 404.7151133735.

The spelling of 66290038 in words is "sixty-six million, two hundred ninety thousand, thirty-eight".