631611487 has 8 divisors (see below), whose sum is σ = 709771104. Its totient is φ = 557676768.

The previous prime is 631611481. The next prime is 631611493. The reversal of 631611487 is 784116136.

631611487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (631611481) and next prime (631611493).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631611487 - 2⁷ = 631611359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631611481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055908 + ... + 1056505.

It is an arithmetic number, because the mean of its divisors is an integer number (88721388).

Almost surely, 2^631611487 is an apocalyptic number.

631611487 is a deficient number, since it is larger than the sum of its proper divisors (78159617).

631611487 is a wasteful number, since it uses less digits than its factorization.

631611487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112449.

The product of its digits is 24192, while the sum is 37.

The square root of 631611487 is about 25131.8818833767. The cubic root of 631611487 is about 857.9922004895.

The spelling of 631611487 in words is "six hundred thirty-one million, six hundred eleven thousand, four hundred eighty-seven".