64330873 has 4 divisors (see below), whose sum is σ = 68115060. Its totient is φ = 60546688.

The previous prime is 64330867. The next prime is 64330883. The reversal of 64330873 is 37803346.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44997264 + 19333609 = 6708^2 + 4397^2 .

It is a cyclic number.

It is not a de Polignac number, because 64330873 - 2⁹ = 64330361 is a prime.

It is a super-2 number, since 2×64330873² = 8276922441884258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64330883) 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, 1892068 + ... + 1892101.

It is an arithmetic number, because the mean of its divisors is an integer number (17028765).

Almost surely, 2^64330873 is an apocalyptic number.

It is an amenable number.

64330873 is a deficient number, since it is larger than the sum of its proper divisors (3784187).

64330873 is a wasteful number, since it uses less digits than its factorization.

64330873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784186.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 64330873 is about 8020.6529035983. The cubic root of 64330873 is about 400.6881342493.

The spelling of 64330873 in words is "sixty-four million, three hundred thirty thousand, eight hundred seventy-three".