623351036 has 144 divisors (see below), whose sum is σ = 1485388800. Its totient is φ = 222213120.

The previous prime is 623351021. The next prime is 623351039. The reversal of 623351036 is 630153326.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623351039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4183490 + ... + 4183638.

It is an arithmetic number, because the mean of its divisors is an integer number (10315200).

Almost surely, 2^623351036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623351036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742694400).

623351036 is an abundant number, since it is smaller than the sum of its proper divisors (862037764).

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

623351036 is a wasteful number, since it uses less digits than its factorization.

623351036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 623351036 is about 24966.9989385989. The cubic root of 623351036 is about 854.2353940887.

The spelling of 623351036 in words is "six hundred twenty-three million, three hundred fifty-one thousand, thirty-six".