623976766084 has 81 divisors (see below), whose sum is σ = 1349760288933. Its totient is φ = 251612274816.

The previous prime is 623976766081. The next prime is 623976766103. The reversal of 623976766084 is 480667679326.

The square root of 623976766084 is 789922.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 485795060100 + 138181705984 = 696990^2 + 371728^2 .

It is a super-2 number, since 2×623976766084² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (623976766081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 187999777 + ... + 188003095.

Almost surely, 2^623976766084 is an apocalyptic number.

623976766084 is the 789922-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623976766084

623976766084 is an abundant number, since it is smaller than the sum of its proper divisors (725783522849).

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

623976766084 is an equidigital number, since it uses as much as digits as its factorization.

623976766084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6690 (or 3345 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 64.

Multiplying 623976766084 by its sum of digits (64), we get a square (39934513029376 = 6319376²).

The spelling of 623976766084 in words is "six hundred twenty-three billion, nine hundred seventy-six million, seven hundred sixty-six thousand, eighty-four".