623042064621 has 40 divisors (see below), whose sum is σ = 985693234680. Its totient is φ = 390837906432.

The previous prime is 623042064607. The next prime is 623042064649. The reversal of 623042064621 is 126460240326.

623042064621 is a `hidden beast` number, since 6 + 2 + 3 + 0 + 4 + 2 + 0 + 646 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16208854596 + 606833210025 = 127314^2 + 778995^2 .

It is not a de Polignac number, because 623042064621 - 2²² = 623037870317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623042024621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6169825 + ... + 6269993.

It is an arithmetic number, because the mean of its divisors is an integer number (24642330867).

Almost surely, 2^623042064621 is an apocalyptic number.

It is an amenable number.

623042064621 is a deficient number, since it is larger than the sum of its proper divisors (362651170059).

623042064621 is a wasteful number, since it uses less digits than its factorization.

623042064621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104715 (or 104706 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 623042064621 in words is "six hundred twenty-three billion, forty-two million, sixty-four thousand, six hundred twenty-one".