623061638 has 8 divisors (see below), whose sum is σ = 938471160. Its totient is φ = 310237920.

The previous prime is 623061631. The next prime is 623061641. The reversal of 623061638 is 836160326.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 623061598 and 623061607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623061631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645848 + ... + 646811.

It is an arithmetic number, because the mean of its divisors is an integer number (117308895).

Almost surely, 2^623061638 is an apocalyptic number.

623061638 is a deficient number, since it is larger than the sum of its proper divisors (315409522).

623061638 is a wasteful number, since it uses less digits than its factorization.

623061638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292902.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 623061638 is about 24961.2026553209. The cubic root of 623061638 is about 854.1031773721.

The spelling of 623061638 in words is "six hundred twenty-three million, sixty-one thousand, six hundred thirty-eight".