677630405 has 8 divisors (see below), whose sum is σ = 816647832. Its totient is φ = 539776768.

The previous prime is 677630357. The next prime is 677630417. The reversal of 677630405 is 504036776.

It can be written as a sum of positive squares in 4 ways, for example, as 277729 + 677352676 = 527^2 + 26026^2 .

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 677630405 - 2⁶ = 677630341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289664 + ... + 291993.

It is an arithmetic number, because the mean of its divisors is an integer number (102080979).

Almost surely, 2^677630405 is an apocalyptic number.

It is an amenable number.

677630405 is a deficient number, since it is larger than the sum of its proper divisors (139017427).

677630405 is a wasteful number, since it uses less digits than its factorization.

677630405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581895.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 677630405 is about 26031.3350598850. The cubic root of 677630405 is about 878.3433039310.

The spelling of 677630405 in words is "six hundred seventy-seven million, six hundred thirty thousand, four hundred five".