64761625 has 16 divisors (see below), whose sum is σ = 81095040. Its totient is φ = 51634800.

The previous prime is 64761623. The next prime is 64761659. The reversal of 64761625 is 52616746.

It is a happy number.

It is not a de Polignac number, because 64761625 - 2¹ = 64761623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64761623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46692 + ... + 48058.

It is an arithmetic number, because the mean of its divisors is an integer number (5068440).

Almost surely, 2^64761625 is an apocalyptic number.

It is an amenable number.

64761625 is a deficient number, since it is larger than the sum of its proper divisors (16333415).

64761625 is a wasteful number, since it uses less digits than its factorization.

64761625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 1751 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 64761625 is about 8047.4607796497. The cubic root of 64761625 is about 401.5804658447.

The spelling of 64761625 in words is "sixty-four million, seven hundred sixty-one thousand, six hundred twenty-five".