65700257 has 8 divisors (see below), whose sum is σ = 79502976. Its totient is φ = 53001792.

The previous prime is 65700221. The next prime is 65700263. The reversal of 65700257 is 75200756.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65700257 - 2¹⁰ = 65699233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65700277) 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, 275933 + ... + 276170.

It is an arithmetic number, because the mean of its divisors is an integer number (9937872).

Almost surely, 2^65700257 is an apocalyptic number.

It is an amenable number.

65700257 is a deficient number, since it is larger than the sum of its proper divisors (13802719).

65700257 is a wasteful number, since it uses less digits than its factorization.

65700257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552127.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 65700257 is about 8105.5695049762. The cubic root of 65700257 is about 403.5112890169.

The spelling of 65700257 in words is "sixty-five million, seven hundred thousand, two hundred fifty-seven".