66316898 has 16 divisors (see below), whose sum is σ = 105872184. Its totient is φ = 31046400.

The previous prime is 66316891. The next prime is 66316927. The reversal of 66316898 is 89861366.

It can be written as a sum of positive squares in 4 ways, for example, as 57714409 + 8602489 = 7597^2 + 2933^2 .

It is not an unprimeable number, because it can be changed into a prime (66316891) 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, 1748 + ... + 11648.

Almost surely, 2^66316898 is an apocalyptic number.

66316898 is a deficient number, since it is larger than the sum of its proper divisors (39555286).

66316898 is a wasteful number, since it uses less digits than its factorization.

66316898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10117.

The product of its digits is 373248, while the sum is 47.

The square root of 66316898 is about 8143.5187726191. The cubic root of 66316898 is about 404.7697680415.

The spelling of 66316898 in words is "sixty-six million, three hundred sixteen thousand, eight hundred ninety-eight".