66452629 has 6 divisors (see below), whose sum is σ = 68298594. Its totient is φ = 64655280.

The previous prime is 66452627. The next prime is 66452669. The reversal of 66452629 is 92625466.

It can be written as a sum of positive squares in 3 ways, for example, as 16184529 + 50268100 = 4023^2 + 7090^2 .

It is not a de Polignac number, because 66452629 - 2¹ = 66452627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66452591 and 66452600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66452621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22902 + ... + 25639.

It is an arithmetic number, because the mean of its divisors is an integer number (11383099).

Almost surely, 2^66452629 is an apocalyptic number.

It is an amenable number.

66452629 is a deficient number, since it is larger than the sum of its proper divisors (1845965).

66452629 is an equidigital number, since it uses as much as digits as its factorization.

66452629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48615 (or 48578 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 66452629 is about 8151.8481953481. The cubic root of 66452629 is about 405.0457277027.

It can be divided in two parts, 66452 and 629, that added together give a square (67081 = 259²).

The spelling of 66452629 in words is "sixty-six million, four hundred fifty-two thousand, six hundred twenty-nine".