64272863 has 4 divisors (see below), whose sum is σ = 64995120. Its totient is φ = 63550608.

The previous prime is 64272853. The next prime is 64272881. The reversal of 64272863 is 36827246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36827246 = 2 ⋅18413623.

It is a cyclic number.

It is not a de Polignac number, because 64272863 - 2¹² = 64268767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64272853) 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, 360995 + ... + 361172.

It is an arithmetic number, because the mean of its divisors is an integer number (16248780).

Almost surely, 2^64272863 is an apocalyptic number.

64272863 is a deficient number, since it is larger than the sum of its proper divisors (722257).

64272863 is an equidigital number, since it uses as much as digits as its factorization.

64272863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722256.

The product of its digits is 96768, while the sum is 38.

The square root of 64272863 is about 8017.0357988474. The cubic root of 64272863 is about 400.5676586115.

The spelling of 64272863 in words is "sixty-four million, two hundred seventy-two thousand, eight hundred sixty-three".