64866833 has 4 divisors (see below), whose sum is σ = 66375408. Its totient is φ = 63358260.

The previous prime is 64866829. The next prime is 64866871. The reversal of 64866833 is 33866846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64866833 - 2² = 64866829 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (64866803) 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, 754223 + ... + 754308.

It is an arithmetic number, because the mean of its divisors is an integer number (16593852).

Almost surely, 2^64866833 is an apocalyptic number.

It is an amenable number.

64866833 is a deficient number, since it is larger than the sum of its proper divisors (1508575).

64866833 is a wasteful number, since it uses less digits than its factorization.

64866833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508574.

The product of its digits is 497664, while the sum is 44.

The square root of 64866833 is about 8053.9948472792. The cubic root of 64866833 is about 401.7978096785.

The spelling of 64866833 in words is "sixty-four million, eight hundred sixty-six thousand, eight hundred thirty-three".