693487 has 2 divisors, whose sum is σ = 693488. Its totient is φ = 693486.

The previous prime is 693437. The next prime is 693493. The reversal of 693487 is 784396.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 693487 - 2⁷ = 693359 is a prime.

693487 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346743 + 346744.

It is an arithmetic number, because the mean of its divisors is an integer number (346744).

2⁶⁹³⁴⁸⁷ is an apocalyptic number.

693487 is a deficient number, since it is larger than the sum of its proper divisors (1).

693487 is an equidigital number, since it uses as much as digits as its factorization.

693487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 693487 is about 832.7586685229. The cubic root of 693487 is about 88.5141645857.

Subtracting 693487 from its reverse (784396), we obtain a palindrome (90909).

It can be divided in two parts, 6934 and 87, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 693487 in words is "six hundred ninety-three thousand, four hundred eighty-seven".