632490811 has 4 divisors (see below), whose sum is σ = 633748752. Its totient is φ = 631232872.

The previous prime is 632490779. The next prime is 632490821. The reversal of 632490811 is 118094236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 632490811 - 2⁵ = 632490779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632490821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628216 + ... + 629221.

It is an arithmetic number, because the mean of its divisors is an integer number (158437188).

Almost surely, 2^632490811 is an apocalyptic number.

632490811 is a deficient number, since it is larger than the sum of its proper divisors (1257941).

632490811 is a wasteful number, since it uses less digits than its factorization.

632490811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257940.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 632490811 is about 25149.3699921091. The cubic root of 632490811 is about 858.3901789438.

The spelling of 632490811 in words is "six hundred thirty-two million, four hundred ninety thousand, eight hundred eleven".