623550406 has 16 divisors (see below), whose sum is σ = 957101184. Its totient is φ = 304567744.

The previous prime is 623550391. The next prime is 623550407. The reversal of 623550406 is 604055326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623550407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12075 + ... + 37321.

It is an arithmetic number, because the mean of its divisors is an integer number (59818824).

Almost surely, 2^623550406 is an apocalyptic number.

623550406 is a deficient number, since it is larger than the sum of its proper divisors (333550778).

623550406 is a wasteful number, since it uses less digits than its factorization.

623550406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25535.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 623550406 is about 24970.9912898948. The cubic root of 623550406 is about 854.3264560784.

The spelling of 623550406 in words is "six hundred twenty-three million, five hundred fifty thousand, four hundred six".