677432993 has 2 divisors, whose sum is σ = 677432994. Its totient is φ = 677432992.

The previous prime is 677432941. The next prime is 677433059. The reversal of 677432993 is 399234776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605996689 + 71436304 = 24617^2 + 8452^2 .

It is a cyclic number.

It is not a de Polignac number, because 677432993 - 2²² = 673238689 is a prime.

It is not a weakly prime, because it can be changed into another prime (677432923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338716496 + 338716497.

It is an arithmetic number, because the mean of its divisors is an integer number (338716497).

Almost surely, 2^677432993 is an apocalyptic number.

It is an amenable number.

677432993 is a deficient number, since it is larger than the sum of its proper divisors (1).

677432993 is an equidigital number, since it uses as much as digits as its factorization.

677432993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 50.

The square root of 677432993 is about 26027.5429689397. The cubic root of 677432993 is about 878.2580006211.

The spelling of 677432993 in words is "six hundred seventy-seven million, four hundred thirty-two thousand, nine hundred ninety-three".