66634492 has 12 divisors (see below), whose sum is σ = 123469920. Its totient is φ = 31357376.

The previous prime is 66634483. The next prime is 66634499. The reversal of 66634492 is 29443666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66634499) 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, 489892 + ... + 490027.

It is an arithmetic number, because the mean of its divisors is an integer number (10289160).

Almost surely, 2^66634492 is an apocalyptic number.

It is an amenable number.

66634492 is a deficient number, since it is larger than the sum of its proper divisors (56835428).

66634492 is a wasteful number, since it uses less digits than its factorization.

66634492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979940 (or 979938 counting only the distinct ones).

The product of its digits is 186624, while the sum is 40.

The square root of 66634492 is about 8162.9952835954. The cubic root of 66634492 is about 405.4148916009.

The spelling of 66634492 in words is "sixty-six million, six hundred thirty-four thousand, four hundred ninety-two".