631986027 has 16 divisors (see below), whose sum is σ = 850744320. Its totient is φ = 417295872.

The previous prime is 631985983. The next prime is 631986029. The reversal of 631986027 is 720689136.

It is a happy number.

It is not a de Polignac number, because 631986027 - 2¹⁶ = 631920491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631986027.

It is not an unprimeable number, because it can be changed into a prime (631986029) 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, 136098 + ... + 140664.

It is an arithmetic number, because the mean of its divisors is an integer number (53171520).

Almost surely, 2^631986027 is an apocalyptic number.

631986027 is a deficient number, since it is larger than the sum of its proper divisors (218758293).

631986027 is a wasteful number, since it uses less digits than its factorization.

631986027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 631986027 is about 25139.3322703687. The cubic root of 631986027 is about 858.1617608952.

The spelling of 631986027 in words is "six hundred thirty-one million, nine hundred eighty-six thousand, twenty-seven".