64463629 has 4 divisors (see below), whose sum is σ = 64494684. Its totient is φ = 64432576.

The previous prime is 64463627. The next prime is 64463639. The reversal of 64463629 is 92636446.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57729604 + 6734025 = 7598^2 + 2595^2 .

It is a cyclic number.

It is not a de Polignac number, because 64463629 - 2¹ = 64463627 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64463591 and 64463600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64463627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12172 + ... + 16645.

It is an arithmetic number, because the mean of its divisors is an integer number (16123671).

Almost surely, 2^64463629 is an apocalyptic number.

It is an amenable number.

64463629 is a deficient number, since it is larger than the sum of its proper divisors (31055).

64463629 is a wasteful number, since it uses less digits than its factorization.

64463629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31054.

The product of its digits is 186624, while the sum is 40.

The square root of 64463629 is about 8028.9245232472. The cubic root of 64463629 is about 400.9635707148.

The spelling of 64463629 in words is "sixty-four million, four hundred sixty-three thousand, six hundred twenty-nine".