64425650 has 12 divisors (see below), whose sum is σ = 119831802. Its totient is φ = 25770240.

The previous prime is 64425629. The next prime is 64425661. The reversal of 64425650 is 5652446.

It can be written as a sum of positive squares in 3 ways, for example, as 60357361 + 4068289 = 7769^2 + 2017^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644207 + ... + 644306.

Almost surely, 2^64425650 is an apocalyptic number.

64425650 is a deficient number, since it is larger than the sum of its proper divisors (55406152).

64425650 is a wasteful number, since it uses less digits than its factorization.

64425650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288525 (or 1288520 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 64425650 is about 8026.5590385918. The cubic root of 64425650 is about 400.8848121588.

The spelling of 64425650 in words is "sixty-four million, four hundred twenty-five thousand, six hundred fifty".