868537634 has 4 divisors (see below), whose sum is σ = 1302806454. Its totient is φ = 434268816.

The previous prime is 868537619. The next prime is 868537651. The reversal of 868537634 is 436735868.

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., 600397009 + 268140625 = 24503^2 + 16375^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217134407 + ... + 217134410.

Almost surely, 2^868537634 is an apocalyptic number.

868537634 is a deficient number, since it is larger than the sum of its proper divisors (434268820).

868537634 is a wasteful number, since it uses less digits than its factorization.

868537634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434268819.

The product of its digits is 2903040, while the sum is 50.

The square root of 868537634 is about 29470.9625563876. The cubic root of 868537634 is about 954.1050922409.

The spelling of 868537634 in words is "eight hundred sixty-eight million, five hundred thirty-seven thousand, six hundred thirty-four".