66465236 has 12 divisors (see below), whose sum is σ = 116375028. Its totient is φ = 33215232.

The previous prime is 66465221. The next prime is 66465241. The reversal of 66465236 is 63256466.

It can be written as a sum of positive squares in 2 ways, for example, as 31584400 + 34880836 = 5620^2 + 5906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66465236.

It is a congruent number.

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, 8420 + ... + 14276.

It is an arithmetic number, because the mean of its divisors is an integer number (9697919).

Almost surely, 2^66465236 is an apocalyptic number.

It is an amenable number.

66465236 is a deficient number, since it is larger than the sum of its proper divisors (49909792).

66465236 is a wasteful number, since it uses less digits than its factorization.

66465236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698 (or 8696 counting only the distinct ones).

The product of its digits is 155520, while the sum is 38.

The square root of 66465236 is about 8152.6214189057. The cubic root of 66465236 is about 405.0713403769.

The spelling of 66465236 in words is "sixty-six million, four hundred sixty-five thousand, two hundred thirty-six".