677958454 has 4 divisors (see below), whose sum is σ = 1016937684. Its totient is φ = 338979226.

The previous prime is 677958451. The next prime is 677958497. The reversal of 677958454 is 454859776.

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

It is a junction number, because it is equal to n+sod(n) for n = 677958395 and 677958404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677958451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169489612 + ... + 169489615.

It is an arithmetic number, because the mean of its divisors is an integer number (254234421).

Almost surely, 2^677958454 is an apocalyptic number.

677958454 is a deficient number, since it is larger than the sum of its proper divisors (338979230).

677958454 is a wasteful number, since it uses less digits than its factorization.

677958454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338979229.

The product of its digits is 8467200, while the sum is 55.

The square root of 677958454 is about 26037.6353381024. The cubic root of 677958454 is about 878.4850199046.

The spelling of 677958454 in words is "six hundred seventy-seven million, nine hundred fifty-eight thousand, four hundred fifty-four".