697345 has 16 divisors (see below), whose sum is σ = 944640. Its totient is φ = 489600.

The previous prime is 697327. The next prime is 697351. The reversal of 697345 is 543796.

It is not a de Polignac number, because 697345 - 2⁷ = 697217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 697345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501 + ... + 1909.

It is an arithmetic number, because the mean of its divisors is an integer number (59040).

It is a Proth number, since it is equal to 681 ⋅ 2¹⁰ + 1 and 681 < 2¹⁰.

2⁶⁹⁷³⁴⁵ is an apocalyptic number.

697345 is the 682-nd pentagonal number.

It is an amenable number.

697345 is a deficient number, since it is larger than the sum of its proper divisors (247295).

697345 is a wasteful number, since it uses less digits than its factorization.

697345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 22680, while the sum is 34.

The square root of 697345 is about 835.0718531959. The cubic root of 697345 is about 88.6780015157.

The spelling of 697345 in words is "six hundred ninety-seven thousand, three hundred forty-five".