66633492 has 12 divisors (see below), whose sum is σ = 155478176. Its totient is φ = 22211160.

The previous prime is 66633491. The next prime is 66633509. The reversal of 66633492 is 29433666.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×66633492² = 8880044512228128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66633492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66633491) 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, 2776384 + ... + 2776407.

Almost surely, 2^66633492 is an apocalyptic number.

It is an amenable number.

66633492 is an abundant number, since it is smaller than the sum of its proper divisors (88844684).

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

66633492 is a wasteful number, since it uses less digits than its factorization.

66633492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552798 (or 5552796 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The square root of 66633492 is about 8162.9340313395. The cubic root of 66633492 is about 405.4128635375.

The spelling of 66633492 in words is "sixty-six million, six hundred thirty-three thousand, four hundred ninety-two".