65625770 has 16 divisors (see below), whose sum is σ = 135001728. Its totient is φ = 22500240.

The previous prime is 65625751. The next prime is 65625773. The reversal of 65625770 is 7752656.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65625773) 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, 468686 + ... + 468825.

It is an arithmetic number, because the mean of its divisors is an integer number (8437608).

Almost surely, 2^65625770 is an apocalyptic number.

65625770 is an abundant number, since it is smaller than the sum of its proper divisors (69375958).

65625770 is a wasteful number, since it uses less digits than its factorization.

65625770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937525.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 65625770 is about 8100.9733983022. The cubic root of 65625770 is about 403.3587390746.

The spelling of 65625770 in words is "sixty-five million, six hundred twenty-five thousand, seven hundred seventy".