64809130 has 8 divisors (see below), whose sum is σ = 116656452. Its totient is φ = 25923648.

The previous prime is 64809119. The next prime is 64809149. The reversal of 64809130 is 3190846.

It can be written as a sum of positive squares in 2 ways, for example, as 53187849 + 11621281 = 7293^2 + 3409^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 64809092 and 64809101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240447 + ... + 3240466.

Almost surely, 2^64809130 is an apocalyptic number.

64809130 is a deficient number, since it is larger than the sum of its proper divisors (51847322).

64809130 is a wasteful number, since it uses less digits than its factorization.

64809130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480920.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 64809130 is about 8050.4117907098. The cubic root of 64809130 is about 401.6786331228.

Adding to 64809130 its reverse (3190846), we get a palindrome (67999976).

The spelling of 64809130 in words is "sixty-four million, eight hundred nine thousand, one hundred thirty".