697045 has 4 divisors (see below), whose sum is σ = 836460. Its totient is φ = 557632.

The previous prime is 697033. The next prime is 697049. The reversal of 697045 is 540796.

697045 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 97969 + 599076 = 313^2 + 774^2 .

It is a cyclic number.

It is not a de Polignac number, because 697045 - 2⁵ = 697013 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 696998 and 697016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697049) 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, 69700 + ... + 69709.

It is an arithmetic number, because the mean of its divisors is an integer number (209115).

2⁶⁹⁷⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

697045 is a deficient number, since it is larger than the sum of its proper divisors (139415).

697045 is a wasteful number, since it uses less digits than its factorization.

697045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139414.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 697045 is about 834.8922086114. The cubic root of 697045 is about 88.6652831739.

The spelling of 697045 in words is "six hundred ninety-seven thousand, forty-five".