623916061 has 2 divisors, whose sum is σ = 623916062. Its totient is φ = 623916060.

The previous prime is 623916049. The next prime is 623916107. The reversal of 623916061 is 160619326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320947225 + 302968836 = 17915^2 + 17406^2 .

It is a cyclic number.

It is not a de Polignac number, because 623916061 - 2¹¹ = 623914013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623916001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311958030 + 311958031.

It is an arithmetic number, because the mean of its divisors is an integer number (311958031).

Almost surely, 2^623916061 is an apocalyptic number.

It is an amenable number.

623916061 is a deficient number, since it is larger than the sum of its proper divisors (1).

623916061 is an equidigital number, since it uses as much as digits as its factorization.

623916061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 623916061 is about 24978.3118124504. The cubic root of 623916061 is about 854.4934180939.

The spelling of 623916061 in words is "six hundred twenty-three million, nine hundred sixteen thousand, sixty-one".