697540 has 12 divisors (see below), whose sum is σ = 1464876. Its totient is φ = 279008.

The previous prime is 697523. The next prime is 697553. The reversal of 697540 is 45796.

It can be written as a sum of positive squares in 2 ways, for example, as 399424 + 298116 = 632^2 + 546^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17419 + ... + 17458.

It is an arithmetic number, because the mean of its divisors is an integer number (122073).

2⁶⁹⁷⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

697540 is an abundant number, since it is smaller than the sum of its proper divisors (767336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697540 is a wasteful number, since it uses less digits than its factorization.

697540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34886 (or 34884 counting only the distinct ones).

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

The square root of 697540 is about 835.1886014548. The cubic root of 697540 is about 88.6862664820.

The spelling of 697540 in words is "six hundred ninety-seven thousand, five hundred forty".