634992211 has 16 divisors (see below), whose sum is σ = 801805824. Its totient is φ = 489988224.

The previous prime is 634992199. The next prime is 634992221. The reversal of 634992211 is 112299436.

It is a cyclic number.

It is not a de Polignac number, because 634992211 - 2⁹ = 634991699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634992221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113265 + ... + 118738.

It is an arithmetic number, because the mean of its divisors is an integer number (50112864).

Almost surely, 2^634992211 is an apocalyptic number.

634992211 is a deficient number, since it is larger than the sum of its proper divisors (166813613).

634992211 is a wasteful number, since it uses less digits than its factorization.

634992211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232050.

The product of its digits is 23328, while the sum is 37.

The square root of 634992211 is about 25199.0517877161. The cubic root of 634992211 is about 859.5202890725.

The spelling of 634992211 in words is "six hundred thirty-four million, nine hundred ninety-two thousand, two hundred eleven".