64668873 has 8 divisors (see below), whose sum is σ = 86292000. Its totient is φ = 43079168.

The previous prime is 64668853. The next prime is 64668887. The reversal of 64668873 is 37886646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64668873 - 2⁵ = 64668841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64668803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3423 + ... + 11876.

It is an arithmetic number, because the mean of its divisors is an integer number (10786500).

Almost surely, 2^64668873 is an apocalyptic number.

It is an amenable number.

64668873 is a deficient number, since it is larger than the sum of its proper divisors (21623127).

64668873 is a wasteful number, since it uses less digits than its factorization.

64668873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16711.

The product of its digits is 1161216, while the sum is 48.

The square root of 64668873 is about 8041.6959032284. The cubic root of 64668873 is about 401.3886589039.

The spelling of 64668873 in words is "sixty-four million, six hundred sixty-eight thousand, eight hundred seventy-three".