65770755 has 16 divisors (see below), whose sum is σ = 105338880. Its totient is φ = 35042528.

The previous prime is 65770729. The next prime is 65770763. The reversal of 65770755 is 55707756.

It is a cyclic number.

It is not a de Polignac number, because 65770755 - 2¹⁰ = 65769731 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21406 + ... + 24284.

It is an arithmetic number, because the mean of its divisors is an integer number (6583680).

Almost surely, 2^65770755 is an apocalyptic number.

65770755 is a deficient number, since it is larger than the sum of its proper divisors (39568125).

65770755 is a wasteful number, since it uses less digits than its factorization.

65770755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 257250, while the sum is 42.

The square root of 65770755 is about 8109.9170772579. The cubic root of 65770755 is about 403.6555632888.

The spelling of 65770755 in words is "sixty-five million, seven hundred seventy thousand, seven hundred fifty-five".