623401869 has 8 divisors (see below), whose sum is σ = 831899392. Its totient is φ = 415252800.

The previous prime is 623401859. The next prime is 623401873. The reversal of 623401869 is 968104326.

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

It is not a de Polignac number, because 623401869 - 2⁴ = 623401853 is a prime.

It is a super-2 number, since 2×623401869² = 777259780545386322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623401859) 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, 82909 + ... + 90114.

It is an arithmetic number, because the mean of its divisors is an integer number (103987424).

Almost surely, 2^623401869 is an apocalyptic number.

It is an amenable number.

623401869 is a deficient number, since it is larger than the sum of its proper divisors (208497523).

623401869 is a wasteful number, since it uses less digits than its factorization.

623401869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174227.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 623401869 is about 24968.0169216540. The cubic root of 623401869 is about 854.2586138397.

The spelling of 623401869 in words is "six hundred twenty-three million, four hundred one thousand, eight hundred sixty-nine".