6429631 has 4 divisors (see below), whose sum is σ = 6924232. Its totient is φ = 5935032.

The previous prime is 6429613. The next prime is 6429641. The reversal of 6429631 is 1369246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6429631 - 2¹¹ = 6427583 is a prime.

It is a super-2 number, since 2×6429631² = 82680309592322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6429593 and 6429602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6429641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247281 + ... + 247306.

It is an arithmetic number, because the mean of its divisors is an integer number (1731058).

Almost surely, 2^6429631 is an apocalyptic number.

6429631 is a deficient number, since it is larger than the sum of its proper divisors (494601).

6429631 is a wasteful number, since it uses less digits than its factorization.

6429631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494600.

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

The square root of 6429631 is about 2535.6717058799. The cubic root of 6429631 is about 185.9496433610.

The spelling of 6429631 in words is "six million, four hundred twenty-nine thousand, six hundred thirty-one".