66468902 has 4 divisors (see below), whose sum is σ = 99703356. Its totient is φ = 33234450.

The previous prime is 66468901. The next prime is 66468907. The reversal of 66468902 is 20986466.

It is a semiprime because it is the product of two primes.

It is a super-4 number, since 4×66468902⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 66468902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66468901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16617224 + ... + 16617227.

It is an arithmetic number, because the mean of its divisors is an integer number (24925839).

Almost surely, 2^66468902 is an apocalyptic number.

66468902 is a deficient number, since it is larger than the sum of its proper divisors (33234454).

66468902 is a wasteful number, since it uses less digits than its factorization.

66468902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33234453.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 66468902 is about 8152.8462514634. The cubic root of 66468902 is about 405.0787876998.

The spelling of 66468902 in words is "sixty-six million, four hundred sixty-eight thousand, nine hundred two".