64504229 has 4 divisors (see below), whose sum is σ = 64530060. Its totient is φ = 64478400.

The previous prime is 64504147. The next prime is 64504249. The reversal of 64504229 is 92240546.

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 47472100 + 17032129 = 6890^2 + 4127^2 .

It is a cyclic number.

It is not a de Polignac number, because 64504229 - 2⁸ = 64503973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64504195 and 64504204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64504249) 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, 8714 + ... + 14315.

It is an arithmetic number, because the mean of its divisors is an integer number (16132515).

Almost surely, 2^64504229 is an apocalyptic number.

It is an amenable number.

64504229 is a deficient number, since it is larger than the sum of its proper divisors (25831).

64504229 is a wasteful number, since it uses less digits than its factorization.

64504229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25830.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 64504229 is about 8031.4524838288. The cubic root of 64504229 is about 401.0477303401.

The spelling of 64504229 in words is "sixty-four million, five hundred four thousand, two hundred twenty-nine".