3661316406 has 24 divisors (see below), whose sum is σ = 8654021064. Its totient is φ = 1109489760.

The previous prime is 3661316339. The next prime is 3661316429. The reversal of 3661316406 is 6046131663.

3661316406 is a `hidden beast` number, since 3 + 6 + 6 + 1 + 3 + 1 + 640 + 6 = 666.

3661316406 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9245551 + ... + 9245946.

It is an arithmetic number, because the mean of its divisors is an integer number (360584211).

Almost surely, 2^3661316406 is an apocalyptic number.

3661316406 is an abundant number, since it is smaller than the sum of its proper divisors (4992704658).

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

3661316406 is a wasteful number, since it uses less digits than its factorization.

3661316406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18491516 (or 18491513 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 3661316406 is about 60508.8126308887. The cubic root of 3661316406 is about 1541.2712848236.

The spelling of 3661316406 in words is "three billion, six hundred sixty-one million, three hundred sixteen thousand, four hundred six".