623340117898 has 4 divisors (see below), whose sum is σ = 935010176850. Its totient is φ = 311670058948.

The previous prime is 623340117893. The next prime is 623340117919. The reversal of 623340117898 is 898711043326.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 607412920689 + 15927197209 = 779367^2 + 126203^2 .

It is not an unprimeable number, because it can be changed into a prime (623340117893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155835029473 + ... + 155835029476.

Almost surely, 2^623340117898 is an apocalyptic number.

623340117898 is a deficient number, since it is larger than the sum of its proper divisors (311670058952).

623340117898 is a wasteful number, since it uses less digits than its factorization.

623340117898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311670058951.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 623340117898 in words is "six hundred twenty-three billion, three hundred forty million, one hundred seventeen thousand, eight hundred ninety-eight".