65705157 has 24 divisors (see below), whose sum is σ = 108692480. Its totient is φ = 37467360.

The previous prime is 65705147. The next prime is 65705177. The reversal of 65705157 is 75150756.

It is not a de Polignac number, because 65705157 - 2⁴ = 65705141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65705147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43932 + ... + 45402.

Almost surely, 2^65705157 is an apocalyptic number.

It is an amenable number.

65705157 is a deficient number, since it is larger than the sum of its proper divisors (42987323).

65705157 is a wasteful number, since it uses less digits than its factorization.

65705157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193 (or 2190 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 65705157 is about 8105.8717606436. The cubic root of 65705157 is about 403.5213202114.

The spelling of 65705157 in words is "sixty-five million, seven hundred five thousand, one hundred fifty-seven".