677733457 has 2 divisors, whose sum is σ = 677733458. Its totient is φ = 677733456.

The previous prime is 677733431. The next prime is 677733461. The reversal of 677733457 is 754337776.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516925696 + 160807761 = 22736^2 + 12681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677733457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 677733457.

It is not a weakly prime, because it can be changed into another prime (677733257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338866728 + 338866729.

It is an arithmetic number, because the mean of its divisors is an integer number (338866729).

Almost surely, 2^677733457 is an apocalyptic number.

It is an amenable number.

677733457 is a deficient number, since it is larger than the sum of its proper divisors (1).

677733457 is an equidigital number, since it uses as much as digits as its factorization.

677733457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2593080, while the sum is 49.

The square root of 677733457 is about 26033.3143683243. The cubic root of 677733457 is about 878.3878269460.

The spelling of 677733457 in words is "six hundred seventy-seven million, seven hundred thirty-three thousand, four hundred fifty-seven".