693387677 has 4 divisors (see below), whose sum is σ = 693681276. Its totient is φ = 693094080.

The previous prime is 693387649. The next prime is 693387679. The reversal of 693387677 is 776783396.

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 194714116 + 498673561 = 13954^2 + 22331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-693387677 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 (693387679) 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, 143228 + ... + 147989.

It is an arithmetic number, because the mean of its divisors is an integer number (173420319).

Almost surely, 2^693387677 is an apocalyptic number.

It is an amenable number.

693387677 is a deficient number, since it is larger than the sum of its proper divisors (293599).

693387677 is a wasteful number, since it uses less digits than its factorization.

693387677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293598.

The product of its digits is 8001504, while the sum is 56.

The square root of 693387677 is about 26332.2554484040. The cubic root of 693387677 is about 885.0993864146.

The spelling of 693387677 in words is "six hundred ninety-three million, three hundred eighty-seven thousand, six hundred seventy-seven".