677909145 has 8 divisors (see below), whose sum is σ = 1084654656. Its totient is φ = 361551536.

The previous prime is 677909143. The next prime is 677909159. The reversal of 677909145 is 541909776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 677909145 - 2¹ = 677909143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 677909094 and 677909103.

It is not an unprimeable number, because it can be changed into a prime (677909143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22596957 + ... + 22596986.

It is an arithmetic number, because the mean of its divisors is an integer number (135581832).

Almost surely, 2^677909145 is an apocalyptic number.

It is an amenable number.

677909145 is a deficient number, since it is larger than the sum of its proper divisors (406745511).

677909145 is a wasteful number, since it uses less digits than its factorization.

677909145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45193951.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 677909145 is about 26036.6884415050. The cubic root of 677909145 is about 878.4637215159.

The spelling of 677909145 in words is "six hundred seventy-seven million, nine hundred nine thousand, one hundred forty-five".