634322387 has 8 divisors (see below), whose sum is σ = 648717312. Its totient is φ = 619965000.

The previous prime is 634322371. The next prime is 634322399. The reversal of 634322387 is 783223436.

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

It is a cyclic number.

It is not a de Polignac number, because 634322387 - 2⁴ = 634322371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634322387.

It is not an unprimeable number, because it can be changed into a prime (634322317) 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, 26312 + ... + 44282.

It is an arithmetic number, because the mean of its divisors is an integer number (81089664).

Almost surely, 2^634322387 is an apocalyptic number.

634322387 is a deficient number, since it is larger than the sum of its proper divisors (14394925).

634322387 is a wasteful number, since it uses less digits than its factorization.

634322387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18769.

The product of its digits is 145152, while the sum is 38.

The square root of 634322387 is about 25185.7576221165. The cubic root of 634322387 is about 859.2179599715.

The spelling of 634322387 in words is "six hundred thirty-four million, three hundred twenty-two thousand, three hundred eighty-seven".