406635630 has 32 divisors (see below), whose sum is σ = 1018358784. Its totient is φ = 103721376.

The previous prime is 406635583. The next prime is 406635637. The reversal of 406635630 is 36536604.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 406635591 and 406635600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406635637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293974 + ... + 295353.

It is an arithmetic number, because the mean of its divisors is an integer number (31823712).

Almost surely, 2^406635630 is an apocalyptic number.

406635630 is an abundant number, since it is smaller than the sum of its proper divisors (611723154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406635630 is a wasteful number, since it uses less digits than its factorization.

406635630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589360.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 406635630 is about 20165.2084045764. The cubic root of 406635630 is about 740.8582870647.

The spelling of 406635630 in words is "four hundred six million, six hundred thirty-five thousand, six hundred thirty".