631616206 has 12 divisors (see below), whose sum is σ = 1025909712. Its totient is φ = 291515016.

The previous prime is 631616203. The next prime is 631616257. The reversal of 631616206 is 602616136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631616203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 934006 + ... + 934681.

It is an arithmetic number, because the mean of its divisors is an integer number (85492476).

Almost surely, 2^631616206 is an apocalyptic number.

631616206 is a deficient number, since it is larger than the sum of its proper divisors (394293506).

631616206 is a wasteful number, since it uses less digits than its factorization.

631616206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868715 (or 1868702 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 631616206 is about 25131.9757679336. The cubic root of 631616206 is about 857.9943372751.

It can be divided in two parts, 6316 and 16206, that added together give a palindrome (22522).

The spelling of 631616206 in words is "six hundred thirty-one million, six hundred sixteen thousand, two hundred six".