66069492 has 24 divisors (see below), whose sum is σ = 154352352. Its totient is φ = 21996000.

The previous prime is 66069469. The next prime is 66069499. The reversal of 66069492 is 29496066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66069499) 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, 8367 + ... + 14217.

It is an arithmetic number, because the mean of its divisors is an integer number (6431348).

Almost surely, 2^66069492 is an apocalyptic number.

It is an amenable number.

66069492 is an abundant number, since it is smaller than the sum of its proper divisors (88282860).

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

66069492 is a wasteful number, since it uses less digits than its factorization.

66069492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6799 (or 6797 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 66069492 is about 8128.3142163674. The cubic root of 66069492 is about 404.2657875900.

The spelling of 66069492 in words is "sixty-six million, sixty-nine thousand, four hundred ninety-two".