677143157 has 2 divisors, whose sum is σ = 677143158. Its totient is φ = 677143156.

The previous prime is 677143151. The next prime is 677143163. The reversal of 677143157 is 751341776.

It is a balanced prime because it is at equal distance from previous prime (677143151) and next prime (677143163).

It can be written as a sum of positive squares in only one way, i.e., 424936996 + 252206161 = 20614^2 + 15881^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677143157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677143151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338571578 + 338571579.

It is an arithmetic number, because the mean of its divisors is an integer number (338571579).

Almost surely, 2^677143157 is an apocalyptic number.

It is an amenable number.

677143157 is a deficient number, since it is larger than the sum of its proper divisors (1).

677143157 is an equidigital number, since it uses as much as digits as its factorization.

677143157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 41.

The square root of 677143157 is about 26021.9745023317. The cubic root of 677143157 is about 878.1327301270.

The spelling of 677143157 in words is "six hundred seventy-seven million, one hundred forty-three thousand, one hundred fifty-seven".