65770071 has 8 divisors (see below), whose sum is σ = 87823104. Its totient is φ = 43781880.

The previous prime is 65770051. The next prime is 65770121. The reversal of 65770071 is 17007756.

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

It is not a de Polignac number, because 65770071 - 2⁷ = 65769943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65770051) 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, 13791 + ... + 17936.

It is an arithmetic number, because the mean of its divisors is an integer number (10977888).

Almost surely, 2^65770071 is an apocalyptic number.

65770071 is a deficient number, since it is larger than the sum of its proper divisors (22053033).

65770071 is a wasteful number, since it uses less digits than its factorization.

65770071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32421.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 65770071 is about 8109.8749065568. The cubic root of 65770071 is about 403.6541639771.

The spelling of 65770071 in words is "sixty-five million, seven hundred seventy thousand, seventy-one".