1063697631 has 8 divisors (see below), whose sum is σ = 1424985984. Its totient is φ = 705770520.

The previous prime is 1063697587. The next prime is 1063697659. The reversal of 1063697631 is 1367963601.

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

It is not a de Polignac number, because 1063697631 - 2⁶ = 1063697567 is a prime.

It is a super-2 number, since 2×1063697631² = 2262905300390024322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063697671) 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, 839571 + ... + 840836.

It is an arithmetic number, because the mean of its divisors is an integer number (178123248).

Almost surely, 2^1063697631 is an apocalyptic number.

1063697631 is a deficient number, since it is larger than the sum of its proper divisors (361288353).

1063697631 is a wasteful number, since it uses less digits than its factorization.

1063697631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680621.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 1063697631 is about 32614.3776730448. The cubic root of 1063697631 is about 1020.7970289034.

The spelling of 1063697631 in words is "one billion, sixty-three million, six hundred ninety-seven thousand, six hundred thirty-one".