623323560464 has 240 divisors, whose sum is σ = 1490810832000. Its totient is φ = 250868428800.

The previous prime is 623323560443. The next prime is 623323560493. The reversal of 623323560464 is 464065323326.

It is a super-2 number, since 2×623323560464² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46168787 + ... + 46182285.

It is an arithmetic number, because the mean of its divisors is an integer number (6211711800).

Almost surely, 2^623323560464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623323560464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745405416000).

623323560464 is an abundant number, since it is smaller than the sum of its proper divisors (867487271536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623323560464 is a wasteful number, since it uses less digits than its factorization.

623323560464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13630 (or 13613 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 44.

The spelling of 623323560464 in words is "six hundred twenty-three billion, three hundred twenty-three million, five hundred sixty thousand, four hundred sixty-four".