65897750 has 16 divisors (see below), whose sum is σ = 123361056. Its totient is φ = 26359000.

The previous prime is 65897747. The next prime is 65897761. The reversal of 65897750 is 5779856.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65897695 and 65897704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131546 + ... + 132045.

It is an arithmetic number, because the mean of its divisors is an integer number (7710066).

Almost surely, 2^65897750 is an apocalyptic number.

65897750 is a deficient number, since it is larger than the sum of its proper divisors (57463306).

65897750 is a wasteful number, since it uses less digits than its factorization.

65897750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263608 (or 263598 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 65897750 is about 8117.7429129038. The cubic root of 65897750 is about 403.9151988466.

The spelling of 65897750 in words is "sixty-five million, eight hundred ninety-seven thousand, seven hundred fifty".