677394653 has 4 divisors (see below), whose sum is σ = 729501948. Its totient is φ = 625287360.

The previous prime is 677394629. The next prime is 677394709. The reversal of 677394653 is 356493776.

It is a happy number.

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 88021924 + 589372729 = 9382^2 + 24277^2 .

It is a cyclic number.

It is not a de Polignac number, because 677394653 - 2²⁶ = 610285789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677394253) by changing a digit.

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, 26053628 + ... + 26053653.

It is an arithmetic number, because the mean of its divisors is an integer number (182375487).

Almost surely, 2^677394653 is an apocalyptic number.

It is an amenable number.

677394653 is a deficient number, since it is larger than the sum of its proper divisors (52107295).

677394653 is a wasteful number, since it uses less digits than its factorization.

677394653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52107294.

The product of its digits is 2857680, while the sum is 50.

The square root of 677394653 is about 26026.8064310626. The cubic root of 677394653 is about 878.2414316776.

The spelling of 677394653 in words is "six hundred seventy-seven million, three hundred ninety-four thousand, six hundred fifty-three".