631677633 has 4 divisors (see below), whose sum is σ = 842236848. Its totient is φ = 421118420.

The previous prime is 631677617. The next prime is 631677637. The reversal of 631677633 is 336776136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 631677633 - 2⁴ = 631677617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631677637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105279603 + ... + 105279608.

It is an arithmetic number, because the mean of its divisors is an integer number (210559212).

Almost surely, 2^631677633 is an apocalyptic number.

It is an amenable number.

631677633 is a deficient number, since it is larger than the sum of its proper divisors (210559215).

631677633 is a wasteful number, since it uses less digits than its factorization.

631677633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210559214.

The product of its digits is 285768, while the sum is 42.

The square root of 631677633 is about 25133.1978267788. The cubic root of 631677633 is about 858.0221507422.

The spelling of 631677633 in words is "six hundred thirty-one million, six hundred seventy-seven thousand, six hundred thirty-three".