623547745326 has 64 divisors (see below), whose sum is σ = 1515750312960. Its totient is φ = 188438935680.

The previous prime is 623547745253. The next prime is 623547745333.

623547745326 is a `hidden beast` number, since 6 + 2 + 3 + 547 + 74 + 5 + 3 + 26 = 666.

623547745326 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×623547745326² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1212171 + ... + 1648166.

It is an arithmetic number, because the mean of its divisors is an integer number (23683598640).

Almost surely, 2^623547745326 is an apocalyptic number.

623547745326 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

623547745326 is an abundant number, since it is smaller than the sum of its proper divisors (892202567634).

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

623547745326 is a wasteful number, since it uses less digits than its factorization.

623547745326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860726 (or 2860720 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 54.

The spelling of 623547745326 in words is "six hundred twenty-three billion, five hundred forty-seven million, seven hundred forty-five thousand, three hundred twenty-six".