123456677 has 2 divisors, whose sum is σ = 123456678. Its totient is φ = 123456676.

The previous prime is 123456667. The next prime is 123456691. The reversal of 123456677 is 776654321.

123456677 = 6414² + 6415² + 6416².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97792321 + 25664356 = 9889^2 + 5066^2 .

It is a cyclic number.

It is not a de Polignac number, because 123456677 - 2²⁶ = 56347813 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123456637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61728338 + 61728339.

It is an arithmetic number, because the mean of its divisors is an integer number (61728339).

Almost surely, 2^123456677 is an apocalyptic number.

It is an amenable number.

123456677 is a deficient number, since it is larger than the sum of its proper divisors (1).

123456677 is an equidigital number, since it uses as much as digits as its factorization.

123456677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The square root of 123456677 is about 11111.1060205544. The cubic root of 123456677 is about 497.9337086429.

The spelling of 123456677 in words is "one hundred twenty-three million, four hundred fifty-six thousand, six hundred seventy-seven".