8157634 has 4 divisors (see below), whose sum is σ = 12236454. Its totient is φ = 4078816.

The previous prime is 8157629. The next prime is 8157641. The reversal of 8157634 is 4367518.

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., 8037225 + 120409 = 2835^2 + 347^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8157634.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2039407 + ... + 2039410.

Almost surely, 2^8157634 is an apocalyptic number.

8157634 is a deficient number, since it is larger than the sum of its proper divisors (4078820).

8157634 is a wasteful number, since it uses less digits than its factorization.

8157634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078819.

The product of its digits is 20160, while the sum is 34.

The square root of 8157634 is about 2856.1572085584. The cubic root of 8157634 is about 201.3050819483.

The spelling of 8157634 in words is "eight million, one hundred fifty-seven thousand, six hundred thirty-four".