64575229 has 4 divisors (see below), whose sum is σ = 64645084. Its totient is φ = 64505376.

The previous prime is 64575211. The next prime is 64575233. The reversal of 64575229 is 92257546.

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 11256025 + 53319204 = 3355^2 + 7302^2 .

It is a cyclic number.

It is not a de Polignac number, because 64575229 - 2¹⁵ = 64542461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64575191 and 64575200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64575209) 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, 33522 + ... + 35395.

It is an arithmetic number, because the mean of its divisors is an integer number (16161271).

Almost surely, 2^64575229 is an apocalyptic number.

It is an amenable number.

64575229 is a deficient number, since it is larger than the sum of its proper divisors (69855).

64575229 is an equidigital number, since it uses as much as digits as its factorization.

64575229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69854.

The product of its digits is 151200, while the sum is 40.

The square root of 64575229 is about 8035.8713902103. The cubic root of 64575229 is about 401.1948212021.

It can be divided in two parts, 6457 and 5229, that multiplied together give a triangular number (33763653 = T₈₂₁₇).

The spelling of 64575229 in words is "sixty-four million, five hundred seventy-five thousand, two hundred twenty-nine".