3561623406 has 32 divisors (see below), whose sum is σ = 8634240000. Its totient is φ = 1079279640.

The previous prime is 3561623389. The next prime is 3561623407. The reversal of 3561623406 is 6043261653.

3561623406 is a `hidden beast` number, since 3 + 5 + 616 + 2 + 34 + 0 + 6 = 666.

3561623406 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 super-2 number, since 2×3561623406² = 25370322572334081672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561623407) 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, 2997406 + ... + 2998593.

It is an arithmetic number, because the mean of its divisors is an integer number (269820000).

Almost surely, 2^3561623406 is an apocalyptic number.

3561623406 is an abundant number, since it is smaller than the sum of its proper divisors (5072616594).

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

3561623406 is a wasteful number, since it uses less digits than its factorization.

3561623406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5996021 (or 5996015 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 3561623406 is about 59679.3381833277. The cubic root of 3561623406 is about 1527.1534076484.

The spelling of 3561623406 in words is "three billion, five hundred sixty-one million, six hundred twenty-three thousand, four hundred six".