677153905 has 4 divisors (see below), whose sum is σ = 812584692. Its totient is φ = 541723120.

The previous prime is 677153849. The next prime is 677153927. The reversal of 677153905 is 509351776.

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

It can be written as a sum of positive squares in 2 ways, for example, as 215032896 + 462121009 = 14664^2 + 21497^2 .

It is not a de Polignac number, because 677153905 - 2⁷ = 677153777 is a prime.

It is a super-3 number, since 3×677153905³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67715386 + ... + 67715395.

It is an arithmetic number, because the mean of its divisors is an integer number (203146173).

Almost surely, 2^677153905 is an apocalyptic number.

It is an amenable number.

677153905 is a deficient number, since it is larger than the sum of its proper divisors (135430787).

677153905 is a wasteful number, since it uses less digits than its factorization.

677153905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135430786.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 677153905 is about 26022.1810192766. The cubic root of 677153905 is about 878.1373761759.

The spelling of 677153905 in words is "six hundred seventy-seven million, one hundred fifty-three thousand, nine hundred five".