677946199 has 4 divisors (see below), whose sum is σ = 774795664. Its totient is φ = 581096736.

The previous prime is 677946187. The next prime is 677946209. The reversal of 677946199 is 991649776.

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

It is a cyclic number.

It is not a de Polignac number, because 677946199 - 2¹³ = 677938007 is a prime.

It is a super-2 number, since 2×677946199² = 919222097477095202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677946119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48424722 + ... + 48424735.

It is an arithmetic number, because the mean of its divisors is an integer number (193698916).

Almost surely, 2^677946199 is an apocalyptic number.

677946199 is a deficient number, since it is larger than the sum of its proper divisors (96849465).

677946199 is an equidigital number, since it uses as much as digits as its factorization.

677946199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96849464.

The product of its digits is 5143824, while the sum is 58.

The square root of 677946199 is about 26037.4000046088. The cubic root of 677946199 is about 878.4797266113.

The spelling of 677946199 in words is "six hundred seventy-seven million, nine hundred forty-six thousand, one hundred ninety-nine".