85707634 has 4 divisors (see below), whose sum is σ = 128561454. Its totient is φ = 42853816.

The previous prime is 85707619. The next prime is 85707647. The reversal of 85707634 is 43670758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73908409 + 11799225 = 8597^2 + 3435^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21426907 + ... + 21426910.

Almost surely, 2^85707634 is an apocalyptic number.

85707634 is a deficient number, since it is larger than the sum of its proper divisors (42853820).

85707634 is a wasteful number, since it uses less digits than its factorization.

85707634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42853819.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 85707634 is about 9257.8417571268. The cubic root of 85707634 is about 440.8997326220.

The spelling of 85707634 in words is "eighty-five million, seven hundred seven thousand, six hundred thirty-four".