623990740654 has 16 divisors (see below), whose sum is σ = 937587077136. Its totient is φ = 311461862400.

The previous prime is 623990740621. The next prime is 623990740657. The reversal of 623990740654 is 456047099326.

623990740654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 623990740595 and 623990740604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623990740657) 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, 9468064 + ... + 9533740.

It is an arithmetic number, because the mean of its divisors is an integer number (58599192321).

Almost surely, 2^623990740654 is an apocalyptic number.

623990740654 is a deficient number, since it is larger than the sum of its proper divisors (313596336482).

623990740654 is a wasteful number, since it uses less digits than its factorization.

623990740654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73731.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 623990740654 in words is "six hundred twenty-three billion, nine hundred ninety million, seven hundred forty thousand, six hundred fifty-four".