677901643 has 4 divisors (see below), whose sum is σ = 678231360. Its totient is φ = 677571928.

The previous prime is 677901557. The next prime is 677901649. The reversal of 677901643 is 346109776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677901643 - 2¹³ = 677893451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677901643.

It is not an unprimeable number, because it can be changed into a prime (677901649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161755 + ... + 165892.

It is an arithmetic number, because the mean of its divisors is an integer number (169557840).

Almost surely, 2^677901643 is an apocalyptic number.

677901643 is a deficient number, since it is larger than the sum of its proper divisors (329717).

677901643 is a wasteful number, since it uses less digits than its factorization.

677901643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329716.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 677901643 is about 26036.5443751662. The cubic root of 677901643 is about 878.4604810329.

The spelling of 677901643 in words is "six hundred seventy-seven million, nine hundred one thousand, six hundred forty-three".