631748069 has 8 divisors (see below), whose sum is σ = 640704000. Its totient is φ = 622816272.

The previous prime is 631748063. The next prime is 631748113. The reversal of 631748069 is 960847136.

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

It is a cyclic number.

It is not a de Polignac number, because 631748069 - 2⁸ = 631747813 is a prime.

It is a super-2 number, since 2×631748069² = 798211245370457522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631748063) 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, 50372 + ... + 61650.

It is an arithmetic number, because the mean of its divisors is an integer number (80088000).

Almost surely, 2^631748069 is an apocalyptic number.

It is an amenable number.

631748069 is a deficient number, since it is larger than the sum of its proper divisors (8955931).

631748069 is a wasteful number, since it uses less digits than its factorization.

631748069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12067.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 631748069 is about 25134.5990419581. The cubic root of 631748069 is about 858.0540411659.

The spelling of 631748069 in words is "six hundred thirty-one million, seven hundred forty-eight thousand, sixty-nine".