623990740653 has 24 divisors (see below), whose sum is σ = 1049515429248. Its totient is φ = 349838472672.

The previous prime is 623990740621. The next prime is 623990740657. The reversal of 623990740653 is 356047099326.

623990740653 is a `hidden beast` number, since 623 + 9 + 9 + 0 + 7 + 4 + 0 + 6 + 5 + 3 = 666.

623990740653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 623990740653 - 2⁵ = 623990740621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623990740653.

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 23 ways as a sum of consecutive naturals, for example, 93436425 + ... + 93443102.

It is an arithmetic number, because the mean of its divisors is an integer number (43729809552).

Almost surely, 2^623990740653 is an apocalyptic number.

623990740653 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

623990740653 is a deficient number, since it is larger than the sum of its proper divisors (425524688595).

623990740653 is a wasteful number, since it uses less digits than its factorization.

623990740653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186879593 (or 186879590 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 54.

The spelling of 623990740653 in words is "six hundred twenty-three billion, nine hundred ninety million, seven hundred forty thousand, six hundred fifty-three".