64529047 has 4 divisors (see below), whose sum is σ = 70395336. Its totient is φ = 58662760.

The previous prime is 64529029. The next prime is 64529051. The reversal of 64529047 is 74092546.

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

It is a cyclic number.

It is not a de Polignac number, because 64529047 - 2¹¹ = 64526999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64528997 and 64529015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64529057) 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, 2933128 + ... + 2933149.

It is an arithmetic number, because the mean of its divisors is an integer number (17598834).

Almost surely, 2^64529047 is an apocalyptic number.

64529047 is a deficient number, since it is larger than the sum of its proper divisors (5866289).

64529047 is a wasteful number, since it uses less digits than its factorization.

64529047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866288.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 64529047 is about 8032.9973857832. The cubic root of 64529047 is about 401.0991581121.

It can be divided in two parts, 645 and 29047, that added together give a palindrome (29692).

The spelling of 64529047 in words is "sixty-four million, five hundred twenty-nine thousand, forty-seven".