85706457 has 8 divisors (see below), whose sum is σ = 115003776. Its totient is φ = 56773392.

The previous prime is 85706431. The next prime is 85706471. The reversal of 85706457 is 75460758.

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

It is not a de Polignac number, because 85706457 - 2⁷ = 85706329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85706407) 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, 90513 + ... + 91454.

It is an arithmetic number, because the mean of its divisors is an integer number (14375472).

Almost surely, 2^85706457 is an apocalyptic number.

It is an amenable number.

85706457 is a deficient number, since it is larger than the sum of its proper divisors (29297319).

85706457 is a wasteful number, since it uses less digits than its factorization.

85706457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182127.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 85706457 is about 9257.7781891769. The cubic root of 85706457 is about 440.8977143601.

The spelling of 85706457 in words is "eighty-five million, seven hundred six thousand, four hundred fifty-seven".