66469892 has 6 divisors (see below), whose sum is σ = 116322318. Its totient is φ = 33234944.

The previous prime is 66469861. The next prime is 66469901. The reversal of 66469892 is 29896466.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 29333056 = 6094^2 + 5416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66469892.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8308733 + ... + 8308740.

It is an arithmetic number, because the mean of its divisors is an integer number (19387053).

Almost surely, 2^66469892 is an apocalyptic number.

It is an amenable number.

66469892 is a deficient number, since it is larger than the sum of its proper divisors (49852426).

66469892 is a wasteful number, since it uses less digits than its factorization.

66469892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16617477 (or 16617475 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 66469892 is about 8152.9069662299. The cubic root of 66469892 is about 405.0807987957.

The spelling of 66469892 in words is "sixty-six million, four hundred sixty-nine thousand, eight hundred ninety-two".