65770457 has 4 divisors (see below), whose sum is σ = 69232080. Its totient is φ = 62308836.

The previous prime is 65770451. The next prime is 65770459. The reversal of 65770457 is 75407756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65770457 - 2²² = 61576153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65770451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730783 + ... + 1730820.

It is an arithmetic number, because the mean of its divisors is an integer number (17308020).

Almost surely, 2^65770457 is an apocalyptic number.

It is an amenable number.

65770457 is a deficient number, since it is larger than the sum of its proper divisors (3461623).

65770457 is a wasteful number, since it uses less digits than its factorization.

65770457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461622.

The product of its (nonzero) digits is 205800, while the sum is 41.

The square root of 65770457 is about 8109.8987046695. The cubic root of 65770457 is about 403.6549536484.

The spelling of 65770457 in words is "sixty-five million, seven hundred seventy thousand, four hundred fifty-seven".