677420391071 has 4 divisors (see below), whose sum is σ = 677634293952. Its totient is φ = 677206488192.

The previous prime is 677420391059. The next prime is 677420391101. The reversal of 677420391071 is 170193024776.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677420391071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677420391031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106946690 + ... + 106953023.

It is an arithmetic number, because the mean of its divisors is an integer number (169408573488).

Almost surely, 2^677420391071 is an apocalyptic number.

677420391071 is a deficient number, since it is larger than the sum of its proper divisors (213902881).

677420391071 is a wasteful number, since it uses less digits than its factorization.

677420391071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213902880.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 677420391071 in words is "six hundred seventy-seven billion, four hundred twenty million, three hundred ninety-one thousand, seventy-one".