693997746377 has 4 divisors (see below), whose sum is σ = 747382188420. Its totient is φ = 640613304336.

The previous prime is 693997746371. The next prime is 693997746419. The reversal of 693997746377 is 773647799396.

693997746377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 419710918201 + 274286828176 = 647851^2 + 523724^2 .

It is a cyclic number.

It is not a de Polignac number, because 693997746377 - 2⁶ = 693997746313 is a prime.

It is a super-2 number, since 2×693997746377² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 693997746298 and 693997746307.

It is not an unprimeable number, because it can be changed into a prime (693997746371) 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, 26692221002 + ... + 26692221027.

It is an arithmetic number, because the mean of its divisors is an integer number (186845547105).

Almost surely, 2^693997746377 is an apocalyptic number.

It is an amenable number.

693997746377 is a deficient number, since it is larger than the sum of its proper divisors (53384442043).

693997746377 is a wasteful number, since it uses less digits than its factorization.

693997746377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53384442042.

The product of its digits is 2268426384, while the sum is 77.

The spelling of 693997746377 in words is "six hundred ninety-three billion, nine hundred ninety-seven million, seven hundred forty-six thousand, three hundred seventy-seven".