66402092 has 12 divisors (see below), whose sum is σ = 117938520. Its totient is φ = 32705376.

The previous prime is 66402073. The next prime is 66402103. The reversal of 66402092 is 29020466.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123617 + ... + 124152.

It is an arithmetic number, because the mean of its divisors is an integer number (9828210).

Almost surely, 2^66402092 is an apocalyptic number.

It is an amenable number.

66402092 is a deficient number, since it is larger than the sum of its proper divisors (51536428).

66402092 is a wasteful number, since it uses less digits than its factorization.

66402092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247840 (or 247838 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 66402092 is about 8148.7478792757. The cubic root of 66402092 is about 404.9430230266.

The spelling of 66402092 in words is "sixty-six million, four hundred two thousand, ninety-two".