64453457 has 4 divisors (see below), whose sum is σ = 66676020. Its totient is φ = 62230896.

The previous prime is 64453447. The next prime is 64453463. The reversal of 64453457 is 75435446.

It is a happy number.

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 20151121 + 44302336 = 4489^2 + 6656^2 .

It is a cyclic number.

It is not a de Polignac number, because 64453457 - 2¹⁴ = 64437073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64453457.

It is not an unprimeable number, because it can be changed into a prime (64453427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111238 + ... + 1111295.

It is an arithmetic number, because the mean of its divisors is an integer number (16669005).

Almost surely, 2^64453457 is an apocalyptic number.

It is an amenable number.

64453457 is a deficient number, since it is larger than the sum of its proper divisors (2222563).

64453457 is a wasteful number, since it uses less digits than its factorization.

64453457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222562.

The product of its digits is 201600, while the sum is 38.

The square root of 64453457 is about 8028.2910385710. The cubic root of 64453457 is about 400.9424796694.

The spelling of 64453457 in words is "sixty-four million, four hundred fifty-three thousand, four hundred fifty-seven".