677155541 has 2 divisors, whose sum is σ = 677155542. Its totient is φ = 677155540.

The previous prime is 677155511. The next prime is 677155553. The reversal of 677155541 is 145551776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452455441 + 224700100 = 21271^2 + 14990^2 .

It is a cyclic number.

It is not a de Polignac number, because 677155541 - 2⁶ = 677155477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677155511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338577770 + 338577771.

It is an arithmetic number, because the mean of its divisors is an integer number (338577771).

Almost surely, 2^677155541 is an apocalyptic number.

It is an amenable number.

677155541 is a deficient number, since it is larger than the sum of its proper divisors (1).

677155541 is an equidigital number, since it uses as much as digits as its factorization.

677155541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147000, while the sum is 41.

The square root of 677155541 is about 26022.2124539786. The cubic root of 677155541 is about 878.1380833670.

The spelling of 677155541 in words is "six hundred seventy-seven million, one hundred fifty-five thousand, five hundred forty-one".