634206536 has 16 divisors (see below), whose sum is σ = 1191418800. Its totient is φ = 316494864.

The previous prime is 634206509. The next prime is 634206541. The reversal of 634206536 is 635602436.

It is a junction number, because it is equal to n+sod(n) for n = 634206496 and 634206505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71606 + ... + 79973.

It is an arithmetic number, because the mean of its divisors is an integer number (74463675).

Almost surely, 2^634206536 is an apocalyptic number.

It is an amenable number.

634206536 is a deficient number, since it is larger than the sum of its proper divisors (557212264).

634206536 is a wasteful number, since it uses less digits than its factorization.

634206536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152108 (or 152104 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 634206536 is about 25183.4575862807. The cubic root of 634206536 is about 859.1656483381.

The spelling of 634206536 in words is "six hundred thirty-four million, two hundred six thousand, five hundred thirty-six".