64764867 has 4 divisors (see below), whose sum is σ = 86353160. Its totient is φ = 43176576.

The previous prime is 64764841. The next prime is 64764881. The reversal of 64764867 is 76846746.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64764867 - 2¹⁰ = 64763843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64764827) 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, 10794142 + ... + 10794147.

It is an arithmetic number, because the mean of its divisors is an integer number (21588290).

Almost surely, 2^64764867 is an apocalyptic number.

64764867 is a deficient number, since it is larger than the sum of its proper divisors (21588293).

64764867 is a wasteful number, since it uses less digits than its factorization.

64764867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21588292.

The product of its digits is 1354752, while the sum is 48.

The square root of 64764867 is about 8047.6622071257. The cubic root of 64764867 is about 401.5871668406.

The spelling of 64764867 in words is "sixty-four million, seven hundred sixty-four thousand, eight hundred sixty-seven".