693788397 has 8 divisors (see below), whose sum is σ = 926157120. Its totient is φ = 461972640.

The previous prime is 693788393. The next prime is 693788437. The reversal of 693788397 is 793887396.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 693788397 - 2² = 693788393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 693788397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693788393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135304 + ... + 140337.

It is an arithmetic number, because the mean of its divisors is an integer number (115769640).

Almost surely, 2^693788397 is an apocalyptic number.

It is an amenable number.

693788397 is a deficient number, since it is larger than the sum of its proper divisors (232368723).

693788397 is a wasteful number, since it uses less digits than its factorization.

693788397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276483.

The product of its digits is 13716864, while the sum is 60.

The square root of 693788397 is about 26339.8632684378. The cubic root of 693788397 is about 885.2698580163.

The spelling of 693788397 in words is "six hundred ninety-three million, seven hundred eighty-eight thousand, three hundred ninety-seven".