677421454 has 4 divisors (see below), whose sum is σ = 1016132184. Its totient is φ = 338710726.

The previous prime is 677421431. The next prime is 677421467. The reversal of 677421454 is 454124776.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 169355362 + ... + 169355365.

It is an arithmetic number, because the mean of its divisors is an integer number (254033046).

Almost surely, 2^677421454 is an apocalyptic number.

677421454 is a deficient number, since it is larger than the sum of its proper divisors (338710730).

677421454 is a wasteful number, since it uses less digits than its factorization.

677421454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338710729.

The product of its digits is 188160, while the sum is 40.

The square root of 677421454 is about 26027.3212989735. The cubic root of 677421454 is about 878.2530140140.

It can be divided in two parts, 67742 and 1454, that added together give a palindrome (69196).

The spelling of 677421454 in words is "six hundred seventy-seven million, four hundred twenty-one thousand, four hundred fifty-four".