66265632 has 36 divisors (see below), whose sum is σ = 188443710. Its totient is φ = 22088448.

The previous prime is 66265627. The next prime is 66265681. The reversal of 66265632 is 23656266.

It can be written as a sum of positive squares in only one way, i.e., 65999376 + 266256 = 8124^2 + 516^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×66265632² = 8782267968718848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114757 + ... + 115332.

Almost surely, 2^66265632 is an apocalyptic number.

It is an amenable number.

66265632 is an abundant number, since it is smaller than the sum of its proper divisors (122178078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66265632 is a wasteful number, since it uses less digits than its factorization.

66265632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230105 (or 230094 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 66265632 is about 8140.3705075383. The cubic root of 66265632 is about 404.6654392957.

The spelling of 66265632 in words is "sixty-six million, two hundred sixty-five thousand, six hundred thirty-two".