623346400553 has 8 divisors (see below), whose sum is σ = 630301115400. Its totient is φ = 616414157568.

The previous prime is 623346400541. The next prime is 623346400609. The reversal of 623346400553 is 355004643326.

It can be written as a sum of positive squares in 4 ways, for example, as 331560610969 + 291785789584 = 575813^2 + 540172^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 623346400553 - 2⁶ = 623346400489 is a prime.

It is a super-2 number, since 2×623346400553² (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 623346400553.

It is not an unprimeable number, because it can be changed into a prime (623346400513) 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, 5562176 + ... + 5673137.

It is an arithmetic number, because the mean of its divisors is an integer number (78787639425).

Almost surely, 2^623346400553 is an apocalyptic number.

It is an amenable number.

623346400553 is a deficient number, since it is larger than the sum of its proper divisors (6954714847).

623346400553 is a wasteful number, since it uses less digits than its factorization.

623346400553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11235931.

The product of its (nonzero) digits is 777600, while the sum is 41.

The spelling of 623346400553 in words is "six hundred twenty-three billion, three hundred forty-six million, four hundred thousand, five hundred fifty-three".