697438 has 16 divisors (see below), whose sum is σ = 1234944. Its totient is φ = 289080.

The previous prime is 697423. The next prime is 697441. The reversal of 697438 is 834796.

697438 is nontrivially palindromic in base 13.

697438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 697397 and 697406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370 + ... + 1237.

It is an arithmetic number, because the mean of its divisors is an integer number (77184).

2⁶⁹⁷⁴³⁸ is an apocalyptic number.

697438 is a deficient number, since it is larger than the sum of its proper divisors (537506).

697438 is a wasteful number, since it uses less digits than its factorization.

697438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647.

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

The square root of 697438 is about 835.1275351705. The cubic root of 697438 is about 88.6819434610.

It can be divided in two parts, 69743 and 8, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 697438 in words is "six hundred ninety-seven thousand, four hundred thirty-eight".