612777541 has 2 divisors, whose sum is σ = 612777542. Its totient is φ = 612777540.

The previous prime is 612777533. The next prime is 612777577. The reversal of 612777541 is 145777216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394181316 + 218596225 = 19854^2 + 14785^2 .

It is a cyclic number.

It is not a de Polignac number, because 612777541 - 2³ = 612777533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612777494 and 612777503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612777241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306388770 + 306388771.

It is an arithmetic number, because the mean of its divisors is an integer number (306388771).

Almost surely, 2^612777541 is an apocalyptic number.

It is an amenable number.

612777541 is a deficient number, since it is larger than the sum of its proper divisors (1).

612777541 is an equidigital number, since it uses as much as digits as its factorization.

612777541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 612777541 is about 24754.3438814282. The cubic root of 612777541 is about 849.3778797255.

The spelling of 612777541 in words is "six hundred twelve million, seven hundred seventy-seven thousand, five hundred forty-one".