66300890 has 8 divisors (see below), whose sum is σ = 119341620. Its totient is φ = 26520352.

The previous prime is 66300889. The next prime is 66300893. The reversal of 66300890 is 9800366.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65237929 + 1062961 = 8077^2 + 1031^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66300893) 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, 3315035 + ... + 3315054.

Almost surely, 2^66300890 is an apocalyptic number.

66300890 is a deficient number, since it is larger than the sum of its proper divisors (53040730).

66300890 is a wasteful number, since it uses less digits than its factorization.

66300890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630096.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 66300890 is about 8142.5358457915. The cubic root of 66300890 is about 404.7371967760.

The spelling of 66300890 in words is "sixty-six million, three hundred thousand, eight hundred ninety".