64880243 has 4 divisors (see below), whose sum is σ = 64938840. Its totient is φ = 64821648.

The previous prime is 64880227. The next prime is 64880273. The reversal of 64880243 is 34208846.

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 64880243 - 2⁴ = 64880227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64880213) 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, 27605 + ... + 29862.

It is an arithmetic number, because the mean of its divisors is an integer number (16234710).

Almost surely, 2^64880243 is an apocalyptic number.

64880243 is a deficient number, since it is larger than the sum of its proper divisors (58597).

64880243 is a wasteful number, since it uses less digits than its factorization.

64880243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58596.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 64880243 is about 8054.8273103773. The cubic root of 64880243 is about 401.8254958222.

The spelling of 64880243 in words is "sixty-four million, eight hundred eighty thousand, two hundred forty-three".