677889001 has 2 divisors, whose sum is σ = 677889002. Its totient is φ = 677889000.

The previous prime is 677888999. The next prime is 677889019. The reversal of 677889001 is 100988776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399800025 + 278088976 = 19995^2 + 16676^2 .

It is a cyclic number.

It is not a de Polignac number, because 677889001 - 2¹ = 677888999 is a prime.

Together with 677888999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (677889061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338944500 + 338944501.

It is an arithmetic number, because the mean of its divisors is an integer number (338944501).

Almost surely, 2^677889001 is an apocalyptic number.

It is an amenable number.

677889001 is a deficient number, since it is larger than the sum of its proper divisors (1).

677889001 is an equidigital number, since it uses as much as digits as its factorization.

677889001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 677889001 is about 26036.3015998817. The cubic root of 677889001 is about 878.4550202769.

The spelling of 677889001 in words is "six hundred seventy-seven million, eight hundred eighty-nine thousand, one".