64625109 has 8 divisors (see below), whose sum is σ = 91235520. Its totient is φ = 40549056.

The previous prime is 64625107. The next prime is 64625117. The reversal of 64625109 is 90152646.

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

It is not a de Polignac number, because 64625109 - 2¹ = 64625107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64625109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64625107) 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, 633529 + ... + 633630.

It is an arithmetic number, because the mean of its divisors is an integer number (11404440).

Almost surely, 2^64625109 is an apocalyptic number.

It is an amenable number.

64625109 is a deficient number, since it is larger than the sum of its proper divisors (26610411).

64625109 is a wasteful number, since it uses less digits than its factorization.

64625109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267179.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 64625109 is about 8038.9743748814. The cubic root of 64625109 is about 401.2980932445.

The spelling of 64625109 in words is "sixty-four million, six hundred twenty-five thousand, one hundred nine".