623654541 has 12 divisors (see below), whose sum is σ = 931897980. Its totient is φ = 401432640.

The previous prime is 623654539. The next prime is 623654543. The reversal of 623654541 is 145456326.

623654541 is a `hidden beast` number, since 62 + 3 + 6 + 54 + 541 = 666.

It is an interprime number because it is at equal distance from previous prime (623654539) and next prime (623654543).

It can be written as a sum of positive squares in 2 ways, for example, as 129481641 + 494172900 = 11379^2 + 22230^2 .

It is not a de Polignac number, because 623654541 - 2¹ = 623654539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623654496 and 623654505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623654543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1194480 + ... + 1195001.

It is an arithmetic number, because the mean of its divisors is an integer number (77658165).

Almost surely, 2^623654541 is an apocalyptic number.

It is an amenable number.

623654541 is a deficient number, since it is larger than the sum of its proper divisors (308243439).

623654541 is a wasteful number, since it uses less digits than its factorization.

623654541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389516 (or 2389513 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 623654541 is about 24973.0763223116. The cubic root of 623654541 is about 854.3740118881.

The spelling of 623654541 in words is "six hundred twenty-three million, six hundred fifty-four thousand, five hundred forty-one".