66225834 has 12 divisors (see below), whose sum is σ = 143489346. Its totient is φ = 22075272.

The previous prime is 66225833. The next prime is 66225839. The reversal of 66225834 is 43852266.

It can be written as a sum of positive squares in only one way, i.e., 63250209 + 2975625 = 7953^2 + 1725^2 .

It is a super-2 number, since 2×66225834² = 8771722177991112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66225833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1839589 + ... + 1839624.

Almost surely, 2^66225834 is an apocalyptic number.

66225834 is an abundant number, since it is smaller than the sum of its proper divisors (77263512).

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

66225834 is a wasteful number, since it uses less digits than its factorization.

66225834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679221 (or 3679218 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 66225834 is about 8137.9256570701. The cubic root of 66225834 is about 404.5844113690.

The spelling of 66225834 in words is "sixty-six million, two hundred twenty-five thousand, eight hundred thirty-four".