623705157403 has 4 divisors (see below), whose sum is σ = 624651599880. Its totient is φ = 622758714928.

The previous prime is 623705157391. The next prime is 623705157419. The reversal of 623705157403 is 304751507326.

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

It is a cyclic number.

It is not a de Polignac number, because 623705157403 - 2¹⁷ = 623705026331 is a prime.

It is a super-2 number, since 2×623705157403² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623705157403.

It is not an unprimeable number, because it can be changed into a prime (623705157473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473220250 + ... + 473221567.

It is an arithmetic number, because the mean of its divisors is an integer number (156162899970).

Almost surely, 2^623705157403 is an apocalyptic number.

623705157403 is a deficient number, since it is larger than the sum of its proper divisors (946442477).

623705157403 is an equidigital number, since it uses as much as digits as its factorization.

623705157403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946442476.

The product of its (nonzero) digits is 529200, while the sum is 43.

The spelling of 623705157403 in words is "six hundred twenty-three billion, seven hundred five million, one hundred fifty-seven thousand, four hundred three".